Top 100 Contractors in PSC Q3: Laboratory Testing Services, FY2025

Name: Top 100 Contractors in PSC Q3: Laboratory Testing Services, FY2025
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2024 – Sep 30, 2025 Code page on GovTribe

The top 10 won 52% of FY2025 PSC Q3 contract dollars

Contract obligations: $530,269,022 Net of deobligations, by contracts coded PSC Q3 or a code under it
Contractors: 595 Parent companies with an obligation
Largest contractor: Laboratory Corporation of America $141 million, 20.5% 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 7 awardees, including Center for Disease Detection, LLC, Esoterix Genetic Laboratories LLC and Bode Cellmark Forensics, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$140,966,497	20.5%	Rank history: #23 in FY2021, #9 in FY2022, #1 in FY2023 and #1 in FY2024; unchanged since FY2024.
2	Quest Diagnostics Incorporated 5 awardees, including Ameripath Inc. and Quest Diagnostics of Puerto Rico Inc. Top agencies VA (Department of Veterans Affairs) DOJ (Department of Justice) DHA (Defense Health Agency)	$92,684,120	13.4%	Rank history: #7 in FY2021, #4 in FY2022, #2 in FY2023 and #2 in FY2024; unchanged since FY2024.
3	Roche Holdings Inc. 2 awardees, including Foundation Medicine, Inc. and Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$50,084,710	7.3%	Rank history: not on the FY2021–FY2024 lists; new.
4	Personalis, Inc. Top agencies VA (Department of Veterans Affairs)	$13,831,100	2.0%	Rank history: not on the FY2021 list, #20 in FY2022, #14 in FY2023 and #8 in FY2024; up 4 since FY2024.
5	Baylor Miraca Genetics Laboratories LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$12,422,670	1.8%	Rank history: not on the FY2021–FY2023 lists and #40 in FY2024; up 35 since FY2024.
6	The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. Top agencies DHA (Defense Health Agency)	$12,003,842	1.7%	Rank history: #49 in FY2021, #23 in FY2022, #7 in FY2023 and #14 in FY2024; up 8 since FY2024.
7	MRIGLOBAL Top agencies HHS (Department of Health and Human Services)	$9,351,498	1.4%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #7 in FY2024; unchanged since FY2024.
8	College of American Pathologists Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DOJ (Department of Justice)	$9,129,811	1.3%	Rank history: not on the FY2021–FY2024 lists; up 202 since FY2024.
9	Arup Laboratories Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$7,572,150	1.1%	Rank history: not on the FY2021–FY2023 lists and #24 in FY2024; up 15 since FY2024.
10	Azenta US Inc. Top agencies HHS (Department of Health and Human Services) USDA (Department of Agriculture) VA (Department of Veterans Affairs)	$7,515,588	1.1%	Rank history: not on the FY2021–FY2024 lists; new.
11	Fulgent Genetics, Inc. 2 awardees, including Fulgent Therapeutics LLC Top agencies VA (Department of Veterans Affairs)	$7,390,617	1.1%	Rank history: #12 in FY2021, #31 in FY2022, #45 in FY2023 and #17 in FY2024; up 6 since FY2024.
12	The Leland Stanford Junior University 3 awardees, including Stanford Hospital & Clinics Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$7,345,325	1.1%	Rank history: #88 in FY2021, #57 in FY2022, #20 in FY2023 and #6 in FY2024; down 6 since FY2024.
13	Mayo Collaborative Services, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$7,044,037	1.0%	Rank history: not on the FY2021–FY2023 lists and #23 in FY2024; up 10 since FY2024.
14	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs)	$6,111,557	0.9%	Rank history: #15 in FY2021, #16 in FY2022, not on the FY2023 list and #10 in FY2024; down 4 since FY2024.
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) DOI (Department of the Interior) DOT (Department of Transportation)	$5,794,226	0.8%	Rank history: not on the FY2021–FY2023 lists and #9 in FY2024; down 6 since FY2024.
16	Tempus AI, Inc. Top agencies VA (Department of Veterans Affairs)	$5,718,045	0.8%	Rank history: not on the FY2021 list, #37 in FY2022, #55 in FY2023 and #5 in FY2024; down 11 since FY2024.
17	Sysmex America Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$4,722,118	0.7%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2024; up 33 since FY2024.
18	Northern Plains Laboratory LLC Top agencies HHS (Department of Health and Human Services) Army (Department of the Army)	$4,619,960	0.7%	Rank history: #64 in FY2021, #56 in FY2022, #28 in FY2023 and #25 in FY2024; up 7 since FY2024.
19	Sonora Quest Laboratories LLC Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$4,619,944	0.7%	Rank history: not on the FY2021–FY2023 lists and #19 in FY2024; unchanged since FY2024.
20	Baylor College of Medicine Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$4,306,771	0.6%	Rank history: #65 in FY2021, #75 in FY2022, #58 in FY2023 and not on the FY2024 list; returned.
21	Akahi Associates, LLC Top agencies DHA (Defense Health Agency) Army (Department of the Army)	$4,197,066	0.6%	Rank history: not on the FY2021–FY2024 lists; new.
22	Sports Medicine Research and Testing Laboratory Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$4,093,670	0.6%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2024; down 1 since FY2024.
23	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 and #22 in FY2024; down 1 since FY2024.
24	AB Staffing Solutions LLC Top agencies HHS (Department of Health and Human Services)	$3,772,178	0.5%	Rank history: #95 in FY2021, #39 in FY2022, #17 in FY2023 and #16 in FY2024; down 8 since FY2024.
25	Oregon Health & Science University Top agencies VA (Department of Veterans Affairs)	$3,231,206	0.5%	Rank history: #56 in FY2021, #83 in FY2022, #44 in FY2023 and #36 in FY2024; up 11 since FY2024.
26	One Stop Recruiting LLC Top agencies VA (Department of Veterans Affairs)	$3,181,663	0.5%	Rank history: #100 in FY2021, #42 in FY2022, #38 in FY2023 and #35 in FY2024; up 9 since FY2024.
27	Oneblood, Inc. Top agencies VA (Department of Veterans Affairs)	$2,996,700	0.4%	Rank history: not on the FY2021–FY2023 lists and #30 in FY2024; up 3 since FY2024.
28	Verily Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$2,994,243	0.4%	Rank history: not on the FY2021–FY2024 lists; new.
29	Bloodworks Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$2,902,844	0.4%	Rank history: #69 in FY2021, #35 in FY2022, #31 in FY2023 and #43 in FY2024; up 14 since FY2024.
30	Tatitlek Federal Services LLC Top agencies Army (Department of the Army)	$2,851,300	0.4%	Rank history: not on the FY2021–FY2023 lists and #32 in FY2024; up 2 since FY2024.
31	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 and #28 in FY2024; down 3 since FY2024.
32	Labcorp Oklahoma Inc. Top agencies HHS (Department of Health and Human Services)	$2,733,000	0.4%	Rank history: not on the FY2021–FY2022 lists, #52 in FY2023 and #51 in FY2024; up 19 since FY2024.
33	Fundacion Inciensa Top agencies HHS (Department of Health and Human Services)	$2,629,040	0.4%	Rank history: #38 in FY2021, #21 in FY2022, #8 in FY2023 and #11 in FY2024; down 22 since FY2024.
34	Vanderbilt University Medical Center Top agencies VA (Department of Veterans Affairs)	$2,508,302	0.4%	Rank history: not on the FY2021–FY2024 lists; up 92 since FY2024.
35	Exact Sciences Corporation 3 awardees, including Preventiongenetics LLC and Genomic Health, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$2,479,117	0.4%	Rank history: #61 in FY2021, not on the FY2022 list, #36 in FY2023 and #31 in FY2024; down 4 since FY2024.
36	Blood Systems Inc. 2 awardees, including Vitalant Top agencies HHS (Department of Health and Human Services)	$2,452,535	0.4%	Rank history: not on the FY2021–FY2024 lists; up 421 since FY2024.
37	Creative Testing Solutions Top agencies DHA (Defense Health Agency)	$2,419,193	0.4%	Rank history: not on the FY2021 list, #60 in FY2022, #89 in FY2023 and #55 in FY2024; up 18 since FY2024.
38	The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$1,947,742	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
39	Neogenomics Inc. Through Neogenomics Laboratories, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,945,673	0.3%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2024; down 6 since FY2024.
40	University of Washington School of Medicine Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,943,926	0.3%	Rank history: not on the FY2021–FY2024 lists; up 106 since FY2024.
41	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; new.
42	Transnetyx Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,854,335	0.3%	Rank history: not on the FY2021–FY2023 lists and #44 in FY2024; up 2 since FY2024.
43	Beckman Coulter, Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$1,752,321	0.3%	Rank history: not on the FY2021–FY2024 lists; new.
44	Ginkgo Bioworks Holdings Inc. Through Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$1,721,834	0.2%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2024; down 6 since FY2024.
45	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; new.
46	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 and #42 in FY2024; down 4 since FY2024.
47	Commonspirit Health Through Commonspirit Oregon Top agencies VA (Department of Veterans Affairs)	$1,598,281	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
48	Ghost RX Inc. Top agencies VA (Department of Veterans Affairs)	$1,567,639	0.2%	Rank history: not on the FY2021 list, #62 in FY2022, #29 in FY2023 and #34 in FY2024; down 14 since FY2024.
49	Diagnostic Laboratory Services, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Navy (Department of the Navy)	$1,471,572	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2024; up 22 since FY2024.
50	Cytopath Biopsy Lab Inc. Top agencies VA (Department of Veterans Affairs)	$1,461,165	0.2%	Rank history: not on the FY2021–FY2024 lists; up 67 since FY2024.
51	Upmc Presbyterian Shadyside Top agencies VA (Department of Veterans Affairs)	$1,419,465	0.2%	Rank history: not on the FY2021–FY2023 lists and #56 in FY2024; up 5 since FY2024.
52	Danaher Corporation 5 awardees, including Cepheid, Leica Microsystems Inc. and Radiometer America, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,372,932	0.2%	Rank history: #42 in FY2021, #26 in FY2022, #13 in FY2023 and not on the FY2024 list; up 60 since FY2024.
53	DNA Labs International Inc Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,352,500	0.2%	Rank history: not on the FY2021 list, #89 in FY2022, #59 in FY2023 and #41 in FY2024; down 12 since FY2024.
54	Ansible Government Solutions LLC Top agencies VA (Department of Veterans Affairs)	$1,343,871	0.2%	Rank history: not on the FY2021 list, #29 in FY2022, #15 in FY2023 and #94 in FY2024; up 40 since FY2024.
55	Rapid Temps, LLC Top agencies HHS (Department of Health and Human Services)	$1,341,195	0.2%	Rank history: #82 in FY2021, #90 in FY2022, #49 in FY2023 and #86 in FY2024; up 31 since FY2024.
56	Caredx, Inc. Top agencies VA (Department of Veterans Affairs)	$1,319,451	0.2%	Rank history: not on the FY2021 list, #95 in FY2022, #88 in FY2023 and not on the FY2024 list; returned.
57	Akahi Ingenesis Partners LLC Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,142,363	0.2%	Rank history: not on the FY2021–FY2022 lists, #69 in FY2023 and #65 in FY2024; up 8 since FY2024.
58	Government Scientific Source Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$1,083,042	0.2%	Rank history: not on the FY2021–FY2022 lists, #70 in FY2023 and #84 in FY2024; up 26 since FY2024.
59	Veracyte, Inc. 2 awardees, including Veracyte Labs SD Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$1,068,443	0.2%	Rank history: not on the FY2021–FY2022 lists, #81 in FY2023 and #83 in FY2024; up 24 since FY2024.
60	A-Team Solutions LLC Top agencies VA (Department of Veterans Affairs)	$1,041,743	0.2%	Rank history: not on the FY2021–FY2023 lists and #74 in FY2024; up 14 since FY2024.
61	J. Craig Venter Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$1,041,427	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #67 in FY2024; up 6 since FY2024.
62	Kaiser Foundation Hospitals Top agencies HHS (Department of Health and Human Services)	$1,040,333	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
63	California Department of Public Health Top agencies DHA (Defense Health Agency)	$1,038,696	0.2%	Rank history: not on the FY2021–FY2024 lists; new.
64	Loyola University Health System Top agencies VA (Department of Veterans Affairs)	$1,037,000	0.2%	Rank history: not on the FY2021–FY2024 lists; up 141 since FY2024.
65	Research Institute At Nationwide Children's Hospital Top agencies HHS (Department of Health and Human Services)	$1,002,589	0.1%	Rank history: not on the FY2021–FY2023 lists and #29 in FY2024; down 36 since FY2024.
66	Psomagen Inc. Top agencies HHS (Department of Health and Human Services)	$989,251	0.1%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2024; down 39 since FY2024.
67	Regents of the University of Michigan Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$987,317	0.1%	Rank history: not on the FY2021–FY2022 lists, #84 in FY2023 and #63 in FY2024; down 4 since FY2024.
68	Ortho-Clinical Diagnostics Inc. 3 awardees Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$986,373	0.1%	Rank history: not on the FY2021–FY2024 lists; up 57 since FY2024.
69	Siemens Corporation 2 awardees, including Siemens Healthcare Diagnostics Inc. and Petnet Solutions, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$954,583	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
70	Regents of the University of Minnesota Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$904,494	0.1%	Rank history: not on the FY2021–FY2024 lists; up 66 since FY2024.
71	Diagnostica Stago Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$881,833	0.1%	Rank history: not on the FY2021–FY2024 lists; up 35 since FY2024.
72	Biomerieux Inc. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$874,844	0.1%	Rank history: not on the FY2021–FY2024 lists; up 316 since FY2024.
73	Stanford Health Care Top agencies VA (Department of Veterans Affairs)	$859,551	0.1%	Rank history: not on the FY2021–FY2024 lists; up 181 since FY2024.
74	University of Washington Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$848,970	0.1%	Rank history: not on the FY2021–FY2024 lists; up 102 since FY2024.
75	LHC Group, Inc. Through Healthcare Connections, Inc. Top agencies VA (Department of Veterans Affairs)	$845,101	0.1%	Rank history: not on the FY2021–FY2023 lists and #70 in FY2024; down 5 since FY2024.
76	Sophia Genetics Inc. Top agencies DHA (Defense Health Agency)	$731,240	0.1%	Rank history: not on the FY2021–FY2023 lists and #66 in FY2024; down 10 since FY2024.
77	Appddictionstudio Limited Liability Company Top agencies USAF (Department of the Air Force) DHA (Defense Health Agency)	$731,153	0.1%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2024; up 14 since FY2024.
78	Quest Diagnostics Clinical Laboratories, Inc. Top agencies DOI (Department of the Interior) DOJ (Department of Justice) DOE (Department of Energy)	$725,161	0.1%	Rank history: not on the FY2021–FY2024 lists; up 147 since FY2024.
79	Biodesix, Inc. Top agencies VA (Department of Veterans Affairs)	$722,814	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
80	The University of Texas Southwestern Medical Center Top agencies VA (Department of Veterans Affairs)	$682,421	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
81	Valor Network, Inc. Top agencies DHA (Defense Health Agency)	$675,967	0.1%	Rank history: not on the FY2021–FY2024 lists; up 169 since FY2024.
82	The Regents of the University of California. San Francisco Top agencies DOJ (Department of Justice)	$671,166	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2024; down 13 since FY2024.
83	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 and #80 in FY2024; down 3 since FY2024.
84	Muscogee Asset Protection, LLC Top agencies USAF (Department of the Air Force)	$657,096	0.1%	Rank history: not on the FY2021–FY2024 lists; up 73 since FY2024.
85	Vector Biomed Inc. Top agencies HHS (Department of Health and Human Services)	$653,000	0.1%	Rank history: not on the FY2021–FY2023 lists and #100 in FY2024; up 15 since FY2024.
86	National Medical Services, Inc. Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice) CSOSA (Court Services and Offender Supervision Agency)	$644,692	0.1%	Rank history: not on the FY2021–FY2024 lists; up 51 since FY2024.
87	South Carolina State of 2 awardees, including Medical University Hospital Authority and The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$636,439	0.1%	Rank history: #60 in FY2021, #38 in FY2022, #26 in FY2023 and #12 in FY2024; down 75 since FY2024.
88	Department of General Services Virginia Top agencies DHA (Defense Health Agency)	$607,200	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
89	Dilligas Corp Top agencies DHA (Defense Health Agency)	$602,325	0.1%	Rank history: not on the FY2021–FY2024 lists; up 34 since FY2024.
90	Amprion, Inc. Top agencies HHS (Department of Health and Human Services)	$598,400	0.1%	Rank history: not on the FY2021–FY2022 lists, #80 in FY2023 and not on the FY2024 list; up 20 since FY2024.
91	Yale Univ Top agencies VA (Department of Veterans Affairs)	$596,707	0.1%	Rank history: not on the FY2021–FY2024 lists; up 80 since FY2024.
92	Central TOX LLC Top agencies VA (Department of Veterans Affairs) Army (Department of the Army)	$586,349	0.1%	Rank history: not on the FY2021–FY2022 lists, #99 in FY2023 and #90 in FY2024; down 2 since FY2024.
93	Incyte Pathology, P.S Top agencies VA (Department of Veterans Affairs)	$585,330	0.1%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and not on the FY2024 list; up 59 since FY2024.
94	Laredo Technical Services, Inc. Top agencies VA (Department of Veterans Affairs)	$563,755	0.1%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2024; down 45 since FY2024.
95	Viralgen Vector Core SL Top agencies HHS (Department of Health and Human Services)	$533,124	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
96	Genscript USA Inc. Top agencies HHS (Department of Health and Human Services)	$532,724	0.1%	Rank history: #71 in FY2021, #72 in FY2022, #51 in FY2023 and not on the FY2024 list; up 57 since FY2024.
97	DMS Imaging, Inc. Top agencies HHS (Department of Health and Human Services)	$527,426	0.1%	Rank history: not on the FY2021–FY2024 lists; new.
98	Giamed Alliance JV LLC Top agencies DHA (Defense Health Agency)	$522,669	0.1%	Rank history: not on the FY2021–FY2022 lists, #77 in FY2023 and #97 in FY2024; down 1 since FY2024.
99	The University of Iowa Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$522,524	0.1%	Rank history: not on the FY2021–FY2024 lists; up 42 since FY2024.
100	Medical University Hospital Authority Top agencies VA (Department of Veterans Affairs)	$518,369	0.1%	Rank history: not on the FY2021–FY2024 lists; new.

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100 of 595 contractors listed here. See the rest on GovTribe.

Rankings for the codes under PSC Q3

Code	Net obligations	Largest contractor
Q301 Reference Laboratory Testing	$530,269,022	Laboratory Corporation of America

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 $689 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.
Fiscal year 2025 ran Oct 1, 2024 – Sep 30, 2025. The Department of Defense reports its contract actions to FPDS about 90 days late, so a fiscal year is ranked once they're in, in February, and the list doesn't change after.
Rank changes compare with FY2024. "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. The step from FY2024 takes the color of the rank change beside it.
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 Q3 contractors in FY2025?

1. Laboratory Corporation of America ($141M), 2. Quest Diagnostics Incorporated ($92.7M), 3. Roche Holdings Inc. ($50.1M), 4. Personalis, Inc. ($13.8M), 5. Baylor Miraca Genetics Laboratories LLC ($12.4M), 6. The Henry M. Jackson Foundation for the Advancement of Military Medicine, Inc. ($12M), 7. MRIGLOBAL ($9.35M), 8. College of American Pathologists ($9.13M), 9. Arup Laboratories Inc. ($7.57M), 10. Azenta US Inc. ($7.52M).

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