Top 100 Contractors in NAICS 621511: Medical Laboratories, Jul 2025–Jun 2026

Name: Top 100 Contractors in NAICS 621511: Medical Laboratories, Jul 2025–Jun 2026
Creator: GovTribe

Parent companies by net contract obligations Jul 1, 2025 – Jun 30, 2026 Code page on GovTribe

The top 10 won 44% of NAICS 621511 contract dollars from July 2025 through June 2026

Contract obligations: $319,166,499 Net of deobligations, by contracts coded NAICS 621511
Contractors: 355 Parent companies with an obligation
Largest contractor: Laboratory Corporation of America $76.1 million, 13.2% of obligations
Data as of: Oct 14, 2026

Contract actions from FPDS (SAM.gov). How the rankings work · Download all 100 rows as CSV

Full ranking

Rank	Contractor	Net obligations	Share	Trend
1	Laboratory Corporation of America 6 awardees, including Center for Disease Detection, LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$76,097,016	13.2%	Rank history: #14 in FY2021, #8 in FY2022, #2 in FY2023, #1 in FY2024 and #1 in FY2025; unchanged since Jul 2024–Jun 2025.
2	Quest Diagnostics Incorporated 4 awardees, including Diagnostic Laboratory of Oklahoma LLC, Ameripath Inc. and Quest Diagnostics of Puerto Rico Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DHA (Defense Health Agency)	$58,730,050	10.2%	Rank history: #5 in FY2021, #4 in FY2022, #1 in FY2023, #2 in FY2024 and #2 in FY2025; unchanged since Jul 2024–Jun 2025.
3	Roche Holdings Inc. 2 awardees, including Foundation Medicine, Inc. and Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs)	$29,744,660	5.2%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4	SNA International LLC Top agencies WHS (DOD Washington Headquarters Service)	$27,493,817	4.8%	Rank history: not on the FY2021 list, #11 in FY2022, #6 in FY2023, #4 in FY2024 and #4 in FY2025; up 2 since Jul 2024–Jun 2025.
5	Center for Disease Detection, LLC 4 awardees, including Laboratory Corporation of America and Medtox Laboratories Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$14,041,276	2.4%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
6	Baylor Miraca Genetics Laboratories LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$11,007,697	1.9%	Rank history: not on the FY2021–FY2023 lists, #37 in FY2024 and #6 in FY2025; up 34 since Jul 2024–Jun 2025.
7	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency)	$10,902,767	1.9%	Rank history: #24 in FY2021, #15 in FY2022, #8 in FY2023, #8 in FY2024 and #5 in FY2025; down 2 since Jul 2024–Jun 2025.
8	Arup Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$10,242,180	1.8%	Rank history: not on the FY2021–FY2023 lists, #15 in FY2024 and #10 in FY2025; up 1 since Jul 2024–Jun 2025.
9	College of American Pathologists Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$9,718,878	1.7%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; down 1 since Jul 2024–Jun 2025.
10	Mayo Collaborative Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$7,677,257	1.3%	Rank history: #69 in FY2021, not on the FY2022–FY2023 lists, #12 in FY2024 and #11 in FY2025; unchanged since Jul 2024–Jun 2025.
11	Sonora Quest Laboratories LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,355,161	1.3%	Rank history: not on the FY2021–FY2023 lists, #11 in FY2024 and #14 in FY2025; up 113 since Jul 2024–Jun 2025.
12	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$6,319,388	1.1%	Rank history: #30 in FY2021, #44 in FY2022, #25 in FY2023, #20 in FY2024 and #18 in FY2025; up 9 since Jul 2024–Jun 2025.
13	Tempus AI, Inc. Top agencies VA (Department of Veterans Affairs)	$5,493,984	1.0%	Rank history: not on the FY2021 list, #21 in FY2022, #30 in FY2023, #6 in FY2024 and #12 in FY2025; down 2 since Jul 2024–Jun 2025.
14	Fulgent Genetics, Inc. 2 awardees, including Fulgent Therapeutics LLC Top agencies VA (Department of Veterans Affairs)	$5,048,165	0.9%	Rank history: #10 in FY2021, #19 in FY2022, #26 in FY2023, #9 in FY2024 and #9 in FY2025; down 2 since Jul 2024–Jun 2025.
15	Abbott Laboratories Inc. 5 awardees, including Pembrooke Occupational Health, Inc., Alere Toxicology Services, Inc. and Redwood Toxicology Laboratory, Inc. Top agencies OSD (Office of the Secretary of Defense) DOT (Department of Transportation) DOJ (Department of Justice)	$4,848,771	0.8%	Rank history: not on the FY2021–FY2023 lists, #7 in FY2024 and #16 in FY2025; new, not ranked in Jul 2024–Jun 2025.
16	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$4,471,948	0.8%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #28 in FY2025; up 7 since Jul 2024–Jun 2025.
17	Northern Plains Laboratory LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$4,345,127	0.8%	Rank history: #33 in FY2021, #25 in FY2022, #15 in FY2023, #14 in FY2024 and #13 in FY2025; down 4 since Jul 2024–Jun 2025.
18	Creative Testing Solutions Top agencies DHA (Defense Health Agency)	$3,390,140	0.6%	Rank history: #46 in FY2021, #23 in FY2022, #34 in FY2023, #22 in FY2024 and #17 in FY2025; down 2 since Jul 2024–Jun 2025.
19	Caredx, Inc. Top agencies VA (Department of Veterans Affairs)	$3,254,939	0.6%	Rank history: not on the FY2021 list, #40 in FY2022, #24 in FY2023, #52 in FY2024 and #15 in FY2025; down 5 since Jul 2024–Jun 2025.
20	Family Health International Top agencies USAID (US Agency for International Development)	$3,190,000	0.6%	Rank history: not on the FY2021–FY2023 lists, #16 in FY2024 and #7 in FY2025; down 13 since Jul 2024–Jun 2025.
21	Tatitlek Federal Services LLC Top agencies Army (Department of the Army)	$2,851,300	0.5%	Rank history: not on the FY2021–FY2023 lists, #17 in FY2024 and #20 in FY2025; down 6 since Jul 2024–Jun 2025.
22	Cherokee Nation Through Cherokee Nation Operational Solutions, L.L.C. Top agencies HHS (Department of Health and Human Services)	$2,782,357	0.5%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
23	Veracyte, Inc. 2 awardees, including Veracyte Labs SD Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$2,745,084	0.5%	Rank history: not on the FY2021 list, #85 in FY2022, #49 in FY2023, #46 in FY2024 and #32 in FY2025; up 7 since Jul 2024–Jun 2025.
24	Bloodworks Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$2,692,620	0.5%	Rank history: #44 in FY2021, #64 in FY2022, #65 in FY2023, #67 in FY2024 and #26 in FY2025; up 31 since Jul 2024–Jun 2025.
25	Stanford Health Care Top agencies VA (Department of Veterans Affairs)	$2,457,595	0.4%	Rank history: not on the FY2021–FY2024 lists and #51 in FY2025; up 22 since Jul 2024–Jun 2025.
26	Vitalant Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,393,689	0.4%	Rank history: #62 in FY2021, #65 in FY2022, #61 in FY2023, not on the FY2024 list and #22 in FY2025; up 139 since Jul 2024–Jun 2025.
27	La Nigerienne D' Assurances Et De Reassurances NIA Top agencies DOS (Department of State)	$2,243,323	0.4%	Rank history: not on the FY2021–FY2024 lists and #33 in FY2025; new, not ranked in Jul 2024–Jun 2025.
28	Propath Services, LLC Top agencies VA (Department of Veterans Affairs)	$2,239,282	0.4%	Rank history: not on the FY2021–FY2025 lists; up 301 since Jul 2024–Jun 2025.
29	Neogenomics Inc. Through Neogenomics Laboratories, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,012,448	0.3%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #24 in FY2025; down 11 since Jul 2024–Jun 2025.
30	Mariano Prime LLC Top agencies DHA (Defense Health Agency)	$1,952,614	0.3%	Rank history: not on the FY2021–FY2023 lists, #26 in FY2024 and #31 in FY2025; down 3 since Jul 2024–Jun 2025.
31	Deployed Resources LLC Top agencies HHS (Department of Health and Human Services)	$1,907,209	0.3%	Rank history: not on the FY2021–FY2024 lists and #25 in FY2025; new, not ranked in Jul 2024–Jun 2025.
32	University of Wisconsin Hospitals and Clinics Authority Top agencies VA (Department of Veterans Affairs)	$1,768,546	0.3%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #27 in FY2025; down 6 since Jul 2024–Jun 2025.
33	Regents of the University of Michigan Top agencies VA (Department of Veterans Affairs)	$1,706,464	0.3%	Rank history: #70 in FY2021, #92 in FY2022, #53 in FY2023, #43 in FY2024 and #53 in FY2025; up 51 since Jul 2024–Jun 2025.
34	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$1,700,920	0.3%	Rank history: not on the FY2021–FY2024 lists and #29 in FY2025; new, not ranked in Jul 2024–Jun 2025.
35	Laboratory Corporation of America Holdings 3 awardees, including NWT Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$1,468,676	0.3%	Rank history: #4 in FY2021, #3 in FY2022, #4 in FY2023, #51 in FY2024 and #35 in FY2025; down 3 since Jul 2024–Jun 2025.
36	University of Washington School of Medicine Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,456,107	0.3%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; down 5 since Jul 2024–Jun 2025.
37	Navitas Clinical Research Inc. Top agencies HHS (Department of Health and Human Services)	$1,430,406	0.2%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #39 in FY2025; down 20 since Jul 2024–Jun 2025.
38	Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$1,423,287	0.2%	Rank history: not on the FY2021–FY2024 lists and #47 in FY2025; up 10 since Jul 2024–Jun 2025.
39	Upmc Presbyterian Shadyside Top agencies VA (Department of Veterans Affairs)	$1,419,465	0.2%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #37 in FY2025; down 5 since Jul 2024–Jun 2025.
40	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services)	$1,398,252	0.2%	Rank history: not on the FY2021–FY2024 lists and #57 in FY2025; up 267 since Jul 2024–Jun 2025.
41	Avmedical LLC Top agencies VA (Department of Veterans Affairs)	$1,236,750	0.2%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; down 8 since Jul 2024–Jun 2025.
42	South Central Pathology Lab Pa Top agencies VA (Department of Veterans Affairs)	$1,216,566	0.2%	Rank history: #87 in FY2021, #63 in FY2022, #76 in FY2023, #70 in FY2024 and #48 in FY2025; up 37 since Jul 2024–Jun 2025.
43	Physicians Laboratory, P.C. Top agencies VA (Department of Veterans Affairs)	$1,180,432	0.2%	Rank history: not on the FY2021 list, #42 in FY2022, #50 in FY2023, #50 in FY2024 and #41 in FY2025; up 1 since Jul 2024–Jun 2025.
44	National Medical Services, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,162,174	0.2%	Rank history: not on the FY2021–FY2022 lists, #74 in FY2023, #64 in FY2024 and #59 in FY2025; up 30 since Jul 2024–Jun 2025.
45	Exact Sciences Corporation Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$1,071,920	0.2%	Rank history: #20 in FY2021, #47 in FY2022, #20 in FY2023, #21 in FY2024 and #23 in FY2025; down 20 since Jul 2024–Jun 2025.
46	Labcorp Oklahoma Inc. Top agencies HHS (Department of Health and Human Services)	$1,068,378	0.2%	Rank history: not on the FY2021–FY2022 lists, #28 in FY2023, #28 in FY2024 and #19 in FY2025; down 26 since Jul 2024–Jun 2025.
47	Loyola University Health System Top agencies VA (Department of Veterans Affairs)	$1,032,000	0.2%	Rank history: not on the FY2021–FY2024 lists and #44 in FY2025; down 6 since Jul 2024–Jun 2025.
48	Genscript USA Inc. Top agencies HHS (Department of Health and Human Services)	$1,023,260	0.2%	Rank history: #56 in FY2021, #51 in FY2022, #47 in FY2023, #42 in FY2024 and #45 in FY2025; down 2 since Jul 2024–Jun 2025.
49	California Department of Public Health Top agencies DHA (Defense Health Agency)	$970,896	0.2%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; down 4 since Jul 2024–Jun 2025.
50	The University of Iowa Top agencies VA (Department of Veterans Affairs)	$940,065	0.2%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023, #44 in FY2024 and #50 in FY2025; up 4 since Jul 2024–Jun 2025.
51	One Stop Recruiting LLC Top agencies VA (Department of Veterans Affairs)	$878,681	0.2%	Rank history: not on the FY2021–FY2024 lists and #52 in FY2025; new, not ranked in Jul 2024–Jun 2025.
52	Cytopath Biopsy Lab Inc. Top agencies VA (Department of Veterans Affairs)	$838,240	0.1%	Rank history: not on the FY2021–FY2023 lists, #58 in FY2024 and #38 in FY2025; unchanged since Jul 2024–Jun 2025.
53	Diagnostic Laboratory Services, Inc. Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$777,324	0.1%	Rank history: not on the FY2021–FY2023 lists, #57 in FY2024 and #42 in FY2025; down 24 since Jul 2024–Jun 2025.
54	Natera Inc. Top agencies VA (Department of Veterans Affairs)	$755,550	0.1%	Rank history: not on the FY2021 list, #28 in FY2022, #78 in FY2023, #68 in FY2024 and not on the FY2025 list; new, not ranked in Jul 2024–Jun 2025.
55	Sophia Genetics Inc. Top agencies DHA (Defense Health Agency)	$731,240	0.1%	Rank history: not on the FY2021–FY2022 lists, #68 in FY2023, not on the FY2024 list and #55 in FY2025; new, not ranked in Jul 2024–Jun 2025.
56	Eurofins Transplant Genomics, LLC Top agencies VA (Department of Veterans Affairs)	$730,125	0.1%	Rank history: not on the FY2021–FY2024 lists and #82 in FY2025; new, not ranked in Jul 2024–Jun 2025.
57	Germfree Laboratories LLC Top agencies VA (Department of Veterans Affairs)	$702,122	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
58	Incyte Pathology, P.S Top agencies VA (Department of Veterans Affairs)	$673,292	0.1%	Rank history: not on the FY2021 list, #53 in FY2022, #51 in FY2023, #86 in FY2024 and #65 in FY2025; up 12 since Jul 2024–Jun 2025.
59	Iowa Pathology Associates, P.C. Top agencies VA (Department of Veterans Affairs)	$639,393	0.1%	Rank history: not on the FY2021–FY2022 lists, #58 in FY2023, #82 in FY2024 and #46 in FY2025; down 24 since Jul 2024–Jun 2025.
60	Central TOX LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$613,868	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #64 in FY2023, #62 in FY2024 and #63 in FY2025; up 3 since Jul 2024–Jun 2025.
61	Koniag Technology and Infrastructure Solutions, LLC Top agencies USAF (Department of the Air Force)	$590,774	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Yale Univ Top agencies VA (Department of Veterans Affairs) Navy (Department of the Navy)	$589,751	0.1%	Rank history: not on the FY2021 list, #29 in FY2022, #83 in FY2023, #81 in FY2024 and #66 in FY2025; up 10 since Jul 2024–Jun 2025.
63	Brigham & Womens Hospital Inc Top agencies VA (Department of Veterans Affairs)	$588,912	0.1%	Rank history: #81 in FY2021, #69 in FY2022, #39 in FY2023, #47 in FY2024 and #67 in FY2025; down 5 since Jul 2024–Jun 2025.
64	Hennepin Healthcare System Inc. Top agencies VA (Department of Veterans Affairs)	$569,490	0.1%	Rank history: not on the FY2021–FY2023 lists, #87 in FY2024 and #91 in FY2025; up 16 since Jul 2024–Jun 2025.
65	Department of General Services Virginia Top agencies DHA (Defense Health Agency)	$549,240	0.1%	Rank history: not on the FY2021–FY2024 lists and #60 in FY2025; down 4 since Jul 2024–Jun 2025.
66	Wisconsin Diagnostic Laboratories LLC Top agencies VA (Department of Veterans Affairs)	$518,637	0.1%	Rank history: #89 in FY2021, not on the FY2022 list, #70 in FY2023, #80 in FY2024 and not on the FY2025 list; up 84 since Jul 2024–Jun 2025.
67	Research Triangle Institute Top agencies HHS (Department of Health and Human Services)	$508,380	0.1%	Rank history: not on the FY2021 list, #30 in FY2022, #17 in FY2023, #56 in FY2024 and #70 in FY2025; new, not ranked in Jul 2024–Jun 2025.
68	Chesapeake Toxicology Resources, LLC Top agencies DOT (Department of Transportation)	$506,319	0.1%	Rank history: not on the FY2021–FY2022 lists, #94 in FY2023, #73 in FY2024 and #72 in FY2025; down 3 since Jul 2024–Jun 2025.
69	Chenega Tri-Services, LLC Top agencies DHA (Defense Health Agency)	$502,559	0.1%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #74 in FY2025; down 2 since Jul 2024–Jun 2025.
70	NNA Inc. Through Dialysis Clinic, Inc. Top agencies VA (Department of Veterans Affairs)	$502,095	0.1%	Rank history: not on the FY2021–FY2024 lists and #75 in FY2025; down 2 since Jul 2024–Jun 2025.
71	Fairbanks Memorial Hospital, LLC Top agencies DHA (Defense Health Agency)	$501,145	0.1%	Rank history: not on the FY2021–FY2023 lists, #92 in FY2024 and #79 in FY2025; up 11 since Jul 2024–Jun 2025.
72	The Rogosin Institute Inc. Top agencies VA (Department of Veterans Affairs)	$497,670	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Health Systems Sciences, LLC Top agencies VA (Department of Veterans Affairs)	$486,331	0.1%	Rank history: not on the FY2021–FY2025 lists; up 118 since Jul 2024–Jun 2025.
74	American Veteran Contracting Solutions LLC Top agencies VA (Department of Veterans Affairs)	$468,000	0.1%	Rank history: #82 in FY2021, #83 in FY2022, #79 in FY2023, #75 in FY2024 and #77 in FY2025; down 3 since Jul 2024–Jun 2025.
75	Nephropathology Associates, PLC Top agencies VA (Department of Veterans Affairs)	$466,001	0.1%	Rank history: not on the FY2021 list, #98 in FY2022, not on the FY2023 list, #99 in FY2024 and #58 in FY2025; down 18 since Jul 2024–Jun 2025.
76	Aegis Toxicology Sciences Corporation Through Aegis Sciences Corporation Top agencies HHS (Department of Health and Human Services)	$448,446	0.1%	Rank history: not on the FY2021–FY2023 lists, #39 in FY2024 and #81 in FY2025; down 34 since Jul 2024–Jun 2025.
77	Machaon Diagnostics Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$448,058	0.1%	Rank history: not on the FY2021–FY2025 lists; up 57 since Jul 2024–Jun 2025.
78	University of California, LOS Angeles Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$443,388	0.1%	Rank history: not on the FY2021–FY2023 lists, #63 in FY2024 and #78 in FY2025; up 67 since Jul 2024–Jun 2025.
79	Sysmex America Inc. Top agencies DHA (Defense Health Agency)	$437,475	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 15 since Jul 2024–Jun 2025.
80	Danaher Corporation Through Cepheid Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) DHS (Department of Homeland Security)	$425,195	0.1%	Rank history: #35 in FY2021, #58 in FY2022, #29 in FY2023, #35 in FY2024 and #40 in FY2025; down 42 since Jul 2024–Jun 2025.
81	Bioscientia Institut FÜR Medizinische Diagnostik GMBH Top agencies DHA (Defense Health Agency)	$407,183	0.1%	Rank history: not on the FY2021–FY2024 lists and #93 in FY2025; up 8 since Jul 2024–Jun 2025.
82	Summit Pathology Top agencies VA (Department of Veterans Affairs)	$405,134	0.1%	Rank history: #98 in FY2021, not on the FY2022–FY2023 lists, #95 in FY2024 and #87 in FY2025; down 7 since Jul 2024–Jun 2025.
83	The Pathology Group, P.C Top agencies VA (Department of Veterans Affairs)	$399,300	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, #90 in FY2024 and #94 in FY2025; up 7 since Jul 2024–Jun 2025.
84	Millennium Health LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$398,243	0.1%	Rank history: not on the FY2021–FY2025 lists; up 172 since Jul 2024–Jun 2025.
85	University of Minnesota Physicians Top agencies VA (Department of Veterans Affairs)	$384,704	0.1%	Rank history: not on the FY2021–FY2024 lists and #98 in FY2025; down 21 since Jul 2024–Jun 2025.
86	Dhhs State Public Health Lab Top agencies DHA (Defense Health Agency)	$356,400	0.1%	Rank history: not on the FY2021–FY2023 lists, #65 in FY2024 and #71 in FY2025; down 20 since Jul 2024–Jun 2025.
87	Labstat International Inc. Top agencies HHS (Department of Health and Human Services)	$355,401	0.1%	Rank history: not on the FY2021 list, #34 in FY2022, #82 in FY2023, #54 in FY2024 and not on the FY2025 list; down 31 since Jul 2024–Jun 2025.
88	Compagnie Maritime D'expertises Top agencies NASA (National Aeronautics and Space Administration)	$346,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 21 since Jul 2024–Jun 2025.
89	All American Express Solutions LLC Top agencies VA (Department of Veterans Affairs)	$335,862	0.1%	Rank history: not on the FY2021–FY2023 lists, #89 in FY2024 and #92 in FY2025; down 2 since Jul 2024–Jun 2025.
90	Renown Health Top agencies VA (Department of Veterans Affairs)	$331,583	0.1%	Rank history: not on the FY2021–FY2025 lists; up 204 since Jul 2024–Jun 2025.
91	San Diego Pathologists Medical Group, Inc. Top agencies VA (Department of Veterans Affairs)	$321,356	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #59 in FY2024 and #86 in FY2025; down 32 since Jul 2024–Jun 2025.
92	Interpath Laboratory, Inc. Top agencies VA (Department of Veterans Affairs)	$313,467	0.1%	Rank history: not on the FY2021–FY2024 lists and #76 in FY2025; down 23 since Jul 2024–Jun 2025.
93	Genomic Testing Cooperative, LCA Top agencies HHS (Department of Health and Human Services)	$312,000	0.1%	Rank history: not on the FY2021–FY2025 lists; up 136 since Jul 2024–Jun 2025.
94	PPD Development LP 2 awardees, including Fisher Scientific Company L.L.C. Top agencies HHS (Department of Health and Human Services)	$297,200	0.1%	Rank history: not on the FY2021–FY2024 lists and #83 in FY2025; up 26 since Jul 2024–Jun 2025.
95	Pure Air UV Inc. Top agencies VA (Department of Veterans Affairs)	$294,974	0.1%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.
96	University of Utah Top agencies VA (Department of Veterans Affairs)	$293,954	0.1%	Rank history: #23 in FY2021, #16 in FY2022, #10 in FY2023, #36 in FY2024 and not on the FY2025 list; up 12 since Jul 2024–Jun 2025.
97	The Association of University Physicians Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$292,649	0.1%	Rank history: not on the FY2021 list, #86 in FY2022, #90 in FY2023, not on the FY2024 list and #95 in FY2025; down 5 since Jul 2024–Jun 2025.
98	Interpace Diagnostics Corporation Top agencies VA (Department of Veterans Affairs)	$288,000	<0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
99	Commonspirit Health Through Commonspirit Oregon Top agencies VA (Department of Veterans Affairs)	$283,281	<0.1%	Rank history: not on the FY2021–FY2024 lists and #30 in FY2025; down 60 since Jul 2024–Jun 2025.
100	Perkinelmer Inc. 2 awardees, including Revvity Omics Inc. Top agencies DHA (Defense Health Agency)	$276,460	<0.1%	Rank history: not on the FY2021–FY2023 lists, #96 in FY2024 and not on the FY2025 list; up 13 since Jul 2024–Jun 2025.

Show 75 more

100 of 355 contractors listed here. See the rest on GovTribe.

How this ranking works

Source: every contract action FPDS records (as published on SAM.gov) in the period, as GovTribe received it.
Amounts are net obligations: what was obligated, less what was deobligated. Shares are of $576 million obligated before deobligations, so they never pass 100%.
Parent companies: each action counts under the ultimate parent its award record names, or under the awardee when it names none, so no dollar counts twice. Parents of the same name (Inc., LLC and the like aside) count as one company, since FPDS records a company's parent under more than one UEI over time. GovTribe corrects a few parents and names by hand; see the corrections.
Period: the trailing 12 months end with the last month that ended at least 90 days ago, because the Department of Defense reports its contract actions to FPDS about 90 days late. The list is rebuilt each night.
Rank changes compare with Jul 2024–Jun 2025. "New" marks a company outside that period's top 500, and "Returned" one of those that was on an earlier fiscal year's list.
Rank lines show each company's rank on every fiscal year's list since FY2021, #1 at the top, on a scale that gives the top of the list more room. A dashed stretch spans years it wasn't on the list.
Placeholder recipients FPDS uses when it names no company ("Miscellaneous Foreign Contractors" and the like) aren't ranked.

Quick answers

Who were the top 10 NAICS 621511 contractors in Jul 2025–Jun 2026?

1. Laboratory Corporation of America ($76.1M), 2. Quest Diagnostics Incorporated ($58.7M), 3. Roche Holdings Inc. ($29.7M), 4. SNA International LLC ($27.5M), 5. Center for Disease Detection, LLC ($14M), 6. Baylor Miraca Genetics Laboratories LLC ($11M), 7. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. ($10.9M), 8. Arup Laboratories Inc. ($10.2M), 9. College of American Pathologists ($9.72M), 10. Mayo Collaborative Services, Inc. ($7.68M).

On GovTribe

Research every contractor on this list

Every contract, task order and IDV they hold
Their subsidiaries, teammates and competitors
Open opportunities they're positioned for
Alerts when they win new work

Try for free Login