Top 100 Contractors in PSC Q301: Reference Laboratory Testing, Jul 2025–Jun 2026

Name: Top 100 Contractors in PSC Q301: Reference Laboratory Testing, 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 36% of PSC Q301 contract dollars from July 2025 through June 2026

Contract obligations: $420,725,299 Net of deobligations, by contracts coded PSC Q301
Contractors: 522 Parent companies with an obligation
Largest contractor: Laboratory Corporation of America $73 million, 10.4% 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, Bode Cellmark Forensics, Inc. and Esoterix Genetic Laboratories LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$72,962,364	10.4%	Rank history: #23 in FY2021, #9 in FY2022, #1 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)	$64,809,651	9.2%	Rank history: #7 in FY2021, #4 in FY2022, #2 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)	$30,853,722	4.4%	Rank history: not on the FY2021–FY2024 lists and #3 in FY2025; unchanged since Jul 2024–Jun 2025.
4	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs)	$15,102,070	2.1%	Rank history: #15 in FY2021, #16 in FY2022, not on the FY2023 list, #10 in FY2024 and #14 in FY2025; up 9 since Jul 2024–Jun 2025.
5	Abbott Laboratories Inc. 5 awardees, including Pembrooke Occupational Health, Inc., Alere Toxicology Services, Inc. and Redwood Toxicology Laboratory, Inc. Top agencies VA (Department of Veterans Affairs) OSD (Office of the Secretary of Defense) DOI (Department of the Interior)	$15,009,140	2.1%	Rank history: not on the FY2021–FY2023 lists, #9 in FY2024 and #15 in FY2025; up 51 since Jul 2024–Jun 2025.
6	Personalis, Inc. Top agencies VA (Department of Veterans Affairs)	$13,497,527	1.9%	Rank history: not on the FY2021 list, #20 in FY2022, #14 in FY2023, #8 in FY2024 and #4 in FY2025; up 1 since Jul 2024–Jun 2025.
7	Center for Disease Detection, LLC 5 awardees, including Laboratory Corporation of America and Bode Cellmark Forensics, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$11,057,549	1.6%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
8	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	1.6%	Rank history: not on the FY2021–FY2023 lists, #40 in FY2024 and #5 in FY2025; up 21 since Jul 2024–Jun 2025.
9	MRIGLOBAL Top agencies HHS (Department of Health and Human Services)	$10,993,704	1.6%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023, #7 in FY2024 and #7 in FY2025; down 4 since Jul 2024–Jun 2025.
10	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency)	$10,902,767	1.6%	Rank history: #49 in FY2021, #23 in FY2022, #7 in FY2023, #14 in FY2024 and #6 in FY2025; down 6 since Jul 2024–Jun 2025.
11	Arup Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$10,605,064	1.5%	Rank history: not on the FY2021–FY2023 lists, #24 in FY2024 and #9 in FY2025; down 3 since Jul 2024–Jun 2025.
12	College of American Pathologists Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$9,677,532	1.4%	Rank history: not on the FY2021–FY2024 lists and #8 in FY2025; down 6 since Jul 2024–Jun 2025.
13	The Leland Stanford Junior University 3 awardees Top agencies VA (Department of Veterans Affairs)	$9,242,879	1.3%	Rank history: #88 in FY2021, #57 in FY2022, #20 in FY2023, #6 in FY2024 and #12 in FY2025; down 3 since Jul 2024–Jun 2025.
14	Forensic Drug & Alcohol Testing LLC Top agencies DOT (Department of Transportation) NRC (Nuclear Regulatory Commission)	$8,788,000	1.2%	Rank history: not on the FY2021–FY2025 lists; up 151 since Jul 2024–Jun 2025.
15	Tempus AI, Inc. Top agencies VA (Department of Veterans Affairs)	$8,189,891	1.2%	Rank history: not on the FY2021 list, #37 in FY2022, #55 in FY2023, #5 in FY2024 and #16 in FY2025; down 1 since Jul 2024–Jun 2025.
16	Mayo Collaborative Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$7,690,328	1.1%	Rank history: not on the FY2021–FY2023 lists, #23 in FY2024 and #13 in FY2025; down 4 since Jul 2024–Jun 2025.
17	Sonora Quest Laboratories LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$7,355,161	1.0%	Rank history: not on the FY2021–FY2023 lists, #19 in FY2024 and #19 in FY2025; up 119 since Jul 2024–Jun 2025.
18	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$6,316,375	0.9%	Rank history: #56 in FY2021, #83 in FY2022, #44 in FY2023, #36 in FY2024 and #25 in FY2025; up 12 since Jul 2024–Jun 2025.
19	One Stop Recruiting LLC Top agencies VA (Department of Veterans Affairs)	$5,626,093	0.8%	Rank history: #100 in FY2021, #42 in FY2022, #38 in FY2023, #35 in FY2024 and #26 in FY2025; up 5 since Jul 2024–Jun 2025.
20	Fulgent Genetics, Inc. 2 awardees, including Fulgent Therapeutics LLC Top agencies VA (Department of Veterans Affairs)	$5,048,165	0.7%	Rank history: #12 in FY2021, #31 in FY2022, #45 in FY2023, #17 in FY2024 and #11 in FY2025; down 5 since Jul 2024–Jun 2025.
21	Advanced Chenega Services, LLC Top agencies DHA (Defense Health Agency)	$4,584,138	0.7%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
22	Bloodworks Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$4,519,831	0.6%	Rank history: #69 in FY2021, #35 in FY2022, #31 in FY2023, #43 in FY2024 and #29 in FY2025; up 19 since Jul 2024–Jun 2025.
23	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$4,471,948	0.6%	Rank history: not on the FY2021–FY2023 lists, #38 in FY2024 and #44 in FY2025; up 11 since Jul 2024–Jun 2025.
24	Akahi Associates, LLC Top agencies DHA (Defense Health Agency)	$4,290,556	0.6%	Rank history: not on the FY2021–FY2024 lists and #21 in FY2025; up 38 since Jul 2024–Jun 2025.
25	Northern Plains Laboratory LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$4,268,127	0.6%	Rank history: #64 in FY2021, #56 in FY2022, #28 in FY2023, #25 in FY2024 and #18 in FY2025; down 9 since Jul 2024–Jun 2025.
26	Sports Medicine Research and Testing Laboratory Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$4,055,770	0.6%	Rank history: not on the FY2021–FY2023 lists, #21 in FY2024 and #22 in FY2025; down 9 since Jul 2024–Jun 2025.
27	Akesogen, Inc. Top agencies VA (Department of Veterans Affairs)	$4,000,000	0.6%	Rank history: #34 in FY2021, #14 in FY2022, #19 in FY2023, #22 in FY2024 and #23 in FY2025; down 8 since Jul 2024–Jun 2025.
28	The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$3,554,129	0.5%	Rank history: not on the FY2021–FY2024 lists and #38 in FY2025; up 37 since Jul 2024–Jun 2025.
29	Sysmex America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$3,314,378	0.5%	Rank history: not on the FY2021–FY2023 lists, #50 in FY2024 and #17 in FY2025; down 9 since Jul 2024–Jun 2025.
30	Oneblood, Inc. Top agencies VA (Department of Veterans Affairs)	$2,996,700	0.4%	Rank history: not on the FY2021–FY2023 lists, #30 in FY2024 and #27 in FY2025; down 3 since Jul 2024–Jun 2025.
31	Tatitlek Federal Services LLC Top agencies Army (Department of the Army)	$2,851,300	0.4%	Rank history: not on the FY2021–FY2023 lists, #32 in FY2024 and #30 in FY2025; down 3 since Jul 2024–Jun 2025.
32	Creative Testing Solutions Top agencies DHA (Defense Health Agency)	$2,831,956	0.4%	Rank history: not on the FY2021 list, #60 in FY2022, #89 in FY2023, #55 in FY2024 and #37 in FY2025; up 18 since Jul 2024–Jun 2025.
33	Ghost RX Inc. Top agencies VA (Department of Veterans Affairs)	$2,824,419	0.4%	Rank history: not on the FY2021 list, #62 in FY2022, #29 in FY2023, #34 in FY2024 and #48 in FY2025; up 54 since Jul 2024–Jun 2025.
34	11100 Billingsley Road Opco LLC Top agencies CSOSA (Court Services and Offender Supervision Agency)	$2,815,763	0.4%	Rank history: not on the FY2021–FY2023 lists, #28 in FY2024 and #31 in FY2025; down 8 since Jul 2024–Jun 2025.
35	Neogenomics Inc. Through Neogenomics Laboratories, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$2,649,607	0.4%	Rank history: not on the FY2021–FY2023 lists, #33 in FY2024 and #39 in FY2025; down 4 since Jul 2024–Jun 2025.
36	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services)	$2,485,877	0.4%	Rank history: #95 in FY2021, #39 in FY2022, #17 in FY2023, #16 in FY2024 and #24 in FY2025; down 13 since Jul 2024–Jun 2025.
37	Stanford Health Care Top agencies VA (Department of Veterans Affairs)	$2,457,595	0.3%	Rank history: not on the FY2021–FY2024 lists and #73 in FY2025; up 35 since Jul 2024–Jun 2025.
38	Vitalant Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$2,395,854	0.3%	Rank history: not on the FY2021–FY2024 lists and #36 in FY2025; up 274 since Jul 2024–Jun 2025.
39	Banner Health Top agencies HHS (Department of Health and Human Services)	$2,332,200	0.3%	Rank history: #53 in FY2021, #70 in FY2022, #41 in FY2023 and not on the FY2024–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
40	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)	$2,327,629	0.3%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023, #83 in FY2024 and #59 in FY2025; up 30 since Jul 2024–Jun 2025.
41	Propath Services, LLC Top agencies VA (Department of Veterans Affairs)	$2,239,282	0.3%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
42	A-Team Solutions LLC Top agencies VA (Department of Veterans Affairs)	$2,071,137	0.3%	Rank history: not on the FY2021–FY2023 lists, #74 in FY2024 and #60 in FY2025; up 122 since Jul 2024–Jun 2025.
43	National Marrow Donor Program Top agencies VA (Department of Veterans Affairs)	$2,062,640	0.3%	Rank history: not on the FY2021–FY2025 lists; up 302 since Jul 2024–Jun 2025.
44	Regents of the University of Michigan Top agencies VA (Department of Veterans Affairs)	$1,953,543	0.3%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023, #63 in FY2024 and #67 in FY2025; up 65 since Jul 2024–Jun 2025.
45	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 #41 in FY2025; new, not ranked in Jul 2024–Jun 2025.
46	Titan-Auxo, LLC Top agencies VA (Department of Veterans Affairs)	$1,752,940	0.2%	Rank history: not on the FY2021–FY2025 lists; up 75 since Jul 2024–Jun 2025.
47	Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$1,747,512	0.2%	Rank history: not on the FY2021–FY2024 lists and #34 in FY2025; down 3 since Jul 2024–Jun 2025.
48	Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,736,257	0.2%	Rank history: not on the FY2021–FY2024 lists and #43 in FY2025; up 5 since Jul 2024–Jun 2025.
49	Transnetyx Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,723,902	0.2%	Rank history: not on the FY2021–FY2023 lists, #44 in FY2024 and #42 in FY2025; down 6 since Jul 2024–Jun 2025.
50	Prairie Band Health Services Inc. Top agencies HHS (Department of Health and Human Services)	$1,700,920	0.2%	Rank history: not on the FY2021–FY2024 lists and #45 in FY2025; new, not ranked in Jul 2024–Jun 2025.
51	Exact Sciences Corporation 3 awardees, including Preventiongenetics LLC and Genomic Health, Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,692,724	0.2%	Rank history: #61 in FY2021, not on the FY2022 list, #36 in FY2023, #31 in FY2024 and #35 in FY2025; down 11 since Jul 2024–Jun 2025.
52	Eagle Integrated Services, LLC Top agencies Navy (Department of the Navy)	$1,677,140	0.2%	Rank history: not on the FY2021–FY2022 lists, #53 in FY2023, #42 in FY2024 and #46 in FY2025; down 10 since Jul 2024–Jun 2025.
53	Cytopath Biopsy Lab Inc. Top agencies VA (Department of Veterans Affairs)	$1,622,240	0.2%	Rank history: not on the FY2021–FY2024 lists and #50 in FY2025; up 6 since Jul 2024–Jun 2025.
54	University of Washington School of Medicine Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,621,888	0.2%	Rank history: not on the FY2021–FY2024 lists and #40 in FY2025; down 9 since Jul 2024–Jun 2025.
55	Danaher Corporation 3 awardees, including Cepheid, Leica Microsystems Inc. and Radiometer America, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,610,487	0.2%	Rank history: #42 in FY2021, #26 in FY2022, #13 in FY2023, not on the FY2024 list and #52 in FY2025; down 3 since Jul 2024–Jun 2025.
56	Fundacion Inciensa Top agencies HHS (Department of Health and Human Services)	$1,451,361	0.2%	Rank history: #38 in FY2021, #21 in FY2022, #8 in FY2023, #11 in FY2024 and #33 in FY2025; down 45 since Jul 2024–Jun 2025.
57	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,425,562	0.2%	Rank history: not on the FY2021–FY2024 lists and #70 in FY2025; up 38 since Jul 2024–Jun 2025.
58	Upmc Presbyterian Shadyside Top agencies VA (Department of Veterans Affairs)	$1,419,465	0.2%	Rank history: not on the FY2021–FY2023 lists, #56 in FY2024 and #51 in FY2025; down 3 since Jul 2024–Jun 2025.
59	National Medical Services, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$1,150,324	0.2%	Rank history: not on the FY2021–FY2024 lists and #86 in FY2025; up 61 since Jul 2024–Jun 2025.
60	Caredx, Inc. Top agencies VA (Department of Veterans Affairs)	$1,124,083	0.2%	Rank history: not on the FY2021 list, #95 in FY2022, #88 in FY2023, not on the FY2024 list and #56 in FY2025; up 118 since Jul 2024–Jun 2025.
61	Marianas Geotech Services LLC Top agencies USAF (Department of the Air Force)	$1,088,120	0.2%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
62	Diagnostic Laboratory Services, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$1,081,195	0.2%	Rank history: not on the FY2021–FY2023 lists, #71 in FY2024 and #49 in FY2025; down 24 since Jul 2024–Jun 2025.
63	The Regents of the University of California. San Francisco Top agencies DOJ (Department of Justice) VA (Department of Veterans Affairs)	$1,072,222	0.2%	Rank history: not on the FY2021–FY2023 lists, #69 in FY2024 and #82 in FY2025; down 15 since Jul 2024–Jun 2025.
64	Government Scientific Source Inc. Top agencies VA (Department of Veterans Affairs)	$1,042,880	0.1%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023, #84 in FY2024 and #58 in FY2025; up 7 since Jul 2024–Jun 2025.
65	Loyola University Health System Top agencies VA (Department of Veterans Affairs)	$1,032,000	0.1%	Rank history: not on the FY2021–FY2024 lists and #64 in FY2025; down 4 since Jul 2024–Jun 2025.
66	Quidelortho Sales Company, LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$990,884	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
67	California Department of Public Health Top agencies DHA (Defense Health Agency)	$970,896	0.1%	Rank history: not on the FY2021–FY2024 lists and #63 in FY2025; up 2 since Jul 2024–Jun 2025.
68	Diagnostica Stago Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$936,159	0.1%	Rank history: not on the FY2021–FY2024 lists and #71 in FY2025; down 14 since Jul 2024–Jun 2025.
69	DNA Labs International Inc Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$935,075	0.1%	Rank history: not on the FY2021 list, #89 in FY2022, #59 in FY2023, #41 in FY2024 and #53 in FY2025; down 32 since Jul 2024–Jun 2025.
70	Labcorp Oklahoma Inc. Top agencies HHS (Department of Health and Human Services)	$898,378	0.1%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023, #51 in FY2024 and #32 in FY2025; down 38 since Jul 2024–Jun 2025.
71	Laredo Technical Services, Inc. Top agencies VA (Department of Veterans Affairs)	$886,238	0.1%	Rank history: not on the FY2021–FY2023 lists, #49 in FY2024 and #94 in FY2025; up 30 since Jul 2024–Jun 2025.
72	Natera Inc. Top agencies VA (Department of Veterans Affairs)	$755,550	0.1%	Rank history: not on the FY2021 list, #61 in FY2022 and not on the FY2023–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
73	Blue Water Thinking,Llc Top agencies VA (Department of Veterans Affairs)	$739,408	0.1%	Rank history: not on the FY2021–FY2025 lists; up 158 since Jul 2024–Jun 2025.
74	Akahi Ingenesis Partners LLC Top agencies DHA (Defense Health Agency)	$733,900	0.1%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023, #65 in FY2024 and #57 in FY2025; down 7 since Jul 2024–Jun 2025.
75	Sophia Genetics Inc. Top agencies DHA (Defense Health Agency)	$731,240	0.1%	Rank history: not on the FY2021–FY2023 lists, #66 in FY2024 and #76 in FY2025; new, not ranked in Jul 2024–Jun 2025.
76	Eurofins Transplant Genomics, LLC Top agencies VA (Department of Veterans Affairs)	$730,125	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
77	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs)	$709,891	0.1%	Rank history: not on the FY2021 list, #29 in FY2022, #15 in FY2023, #94 in FY2024 and #54 in FY2025; down 42 since Jul 2024–Jun 2025.
78	Cameo Consulting Group LLC Top agencies VA (Department of Veterans Affairs)	$704,375	0.1%	Rank history: not on the FY2021–FY2023 lists, #77 in FY2024 and not on the FY2025 list; unchanged since Jul 2024–Jun 2025.
79	Veterans Healthcare Supply Solutions, Inc. Top agencies VA (Department of Veterans Affairs)	$696,924	0.1%	Rank history: not on the FY2021–FY2025 lists; up 190 since Jul 2024–Jun 2025.
80	American Type Culture Collection Top agencies HHS (Department of Health and Human Services)	$674,937	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
81	Incyte Pathology, P.S Top agencies VA (Department of Veterans Affairs)	$673,292	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023, not on the FY2024 list and #93 in FY2025; up 35 since Jul 2024–Jun 2025.
82	Advanced Environmental Laboratories, Inc. Top agencies DHA (Defense Health Agency)	$665,440	0.1%	Rank history: not on the FY2021–FY2025 lists; up 79 since Jul 2024–Jun 2025.
83	Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$664,890	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
84	Eagle Health Analytics, LLC Top agencies Army (Department of the Army)	$663,464	0.1%	Rank history: not on the FY2021–FY2022 lists, #91 in FY2023, #80 in FY2024 and #83 in FY2025; new, not ranked in Jul 2024–Jun 2025.
85	Muscogee Asset Protection, LLC Top agencies USAF (Department of the Air Force)	$657,096	0.1%	Rank history: not on the FY2021–FY2024 lists and #84 in FY2025; up 56 since Jul 2024–Jun 2025.
86	Vector Biomed Inc. Top agencies HHS (Department of Health and Human Services)	$653,000	0.1%	Rank history: not on the FY2021–FY2023 lists, #100 in FY2024 and #85 in FY2025; up 10 since Jul 2024–Jun 2025.
87	DMS Imaging, Inc. Top agencies HHS (Department of Health and Human Services)	$628,670	0.1%	Rank history: not on the FY2021–FY2024 lists and #97 in FY2025; up 48 since Jul 2024–Jun 2025.
88	Dilligas Corp Top agencies DHA (Defense Health Agency)	$623,862	0.1%	Rank history: not on the FY2021–FY2024 lists and #89 in FY2025; down 4 since Jul 2024–Jun 2025.
89	Biobot Analytics Inc Top agencies EOP (Executive Office of the President)	$615,700	0.1%	Rank history: not on the FY2021–FY2025 lists; new, not ranked in Jul 2024–Jun 2025.
90	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–FY2022 lists, #99 in FY2023, #90 in FY2024 and #92 in FY2025; up 10 since Jul 2024–Jun 2025.
91	University of California, Davis Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$604,348	0.1%	Rank history: not on the FY2021–FY2025 lists; up 106 since Jul 2024–Jun 2025.
92	UIC Parent Corporation Through Curia Global Inc. Top agencies HHS (Department of Health and Human Services)	$592,253	0.1%	Rank history: not on the FY2021–FY2025 lists; up 63 since Jul 2024–Jun 2025.
93	University of Washington Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$577,987	0.1%	Rank history: not on the FY2021–FY2024 lists and #74 in FY2025; up 14 since Jul 2024–Jun 2025.
94	Brigham & Womens Hospital Inc Top agencies VA (Department of Veterans Affairs)	$563,964	0.1%	Rank history: not on the FY2021–FY2022 lists, #97 in FY2023, #68 in FY2024 and not on the FY2025 list; down 9 since Jul 2024–Jun 2025.
95	Department of General Services Virginia Top agencies DHA (Defense Health Agency)	$549,240	0.1%	Rank history: not on the FY2021–FY2024 lists and #88 in FY2025; up 2 since Jul 2024–Jun 2025.
96	Appddictionstudio Limited Liability Company Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$547,906	0.1%	Rank history: not on the FY2021–FY2023 lists, #91 in FY2024 and #77 in FY2025; down 13 since Jul 2024–Jun 2025.
97	Viralgen Vector Core SL Top agencies HHS (Department of Health and Human Services)	$536,824	0.1%	Rank history: not on the FY2021–FY2024 lists and #95 in FY2025; new, not ranked in Jul 2024–Jun 2025.
98	Wisconsin Diagnostic Laboratories LLC Top agencies VA (Department of Veterans Affairs)	$518,637	0.1%	Rank history: not on the FY2021–FY2025 lists; up 68 since Jul 2024–Jun 2025.
99	Chesapeake Toxicology Resources, LLC Top agencies DOT (Department of Transportation)	$506,319	0.1%	Rank history: not on the FY2021–FY2025 lists; up 11 since Jul 2024–Jun 2025.
100	NNA Inc. Through Dialysis Clinic, Inc. Top agencies VA (Department of Veterans Affairs)	$502,095	0.1%	Rank history: not on the FY2021–FY2025 lists; up 13 since Jul 2024–Jun 2025.

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100 of 522 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 $703 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 PSC Q301 contractors in Jul 2025–Jun 2026?

1. Laboratory Corporation of America ($73M), 2. Quest Diagnostics Incorporated ($64.8M), 3. Roche Holdings Inc. ($30.9M), 4. Infinity Biologix LLC ($15.1M), 5. Abbott Laboratories Inc. ($15M), 6. Personalis, Inc. ($13.5M), 7. Center for Disease Detection, LLC ($11.1M), 8. Baylor Miraca Genetics Laboratories LLC ($11M), 9. MRIGLOBAL ($11M), 10. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. ($10.9M).

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