Top 100 Contractors in NAICS 325413: In-Vitro Diagnostic Substance Manufacturing, FY2024

Name: Top 100 Contractors in NAICS 325413: In-Vitro Diagnostic Substance Manufacturing, FY2024
Creator: GovTribe

Parent companies by net contract obligations Oct 1, 2023 – Sep 30, 2024 Code page on GovTribe

The top 10 won 43% of FY2024 NAICS 325413 contract dollars

Contract obligations: $150,442,619 Net of deobligations, by contracts coded NAICS 325413
Contractors: 253 Parent companies with an obligation
Largest contractor: Danaher Corporation $33.7 million, 11.7% 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	Danaher Corporation 12 awardees, including Cepheid, Beckman Coulter, Inc. and Leica Microsystems Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$33,657,371	11.7%	Rank history: #4 in FY2021, #5 in FY2022, #11 in FY2023 and #1 in FY2025; up 10 since FY2023.
2	Atlantic Trading LLC Top agencies HHS (Department of Health and Human Services)	$26,640,809	9.2%	Rank history: not on the FY2021 list, #17 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
3	Roche Holding AG 2 awardees, including Roche Diagnostics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$14,815,124	5.1%	Rank history: #7 in FY2021, #4 in FY2022, #5 in FY2023 and #99 in FY2025; up 2 since FY2023.
4	Compagnie Merieux Alliance 2 awardees, including Biofire Diagnostics LLC and Biomerieux Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$13,693,138	4.7%	Rank history: #8 in FY2021, #12 in FY2022, #15 in FY2023 and not on the FY2025 list; up 11 since FY2023.
5	Hologic, Inc. 2 awardees, including Hologic Sales and Service, LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$9,611,321	3.3%	Rank history: #11 in FY2021, #14 in FY2022, #22 in FY2023 and #19 in FY2025; up 17 since FY2023.
6	Biomerieux Inc. 4 awardees, including Biofire Defense LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$7,439,150	2.6%	Rank history: #85 in FY2021, not on the FY2022–FY2023 lists and #2 in FY2025; returned.
7	PPD Development LP 8 awardees, including Fisher Scientific Company L.L.C., One Lambda, Inc. and Life Technologies Corporation Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$6,303,570	2.2%	Rank history: not on the FY2021–FY2022 lists, #49 in FY2023 and #5 in FY2025; up 42 since FY2023.
8	Siemens Aktiengesellschaft 3 awardees, including Siemens Healthcare Diagnostics Inc., Siemens Healthcare SL. and Siemens Healthcare S.R.L. Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) USAF (Department of the Air Force)	$4,272,600	1.5%	Rank history: #22 in FY2021, #3 in FY2022, #24 in FY2023 and not on the FY2025 list; up 16 since FY2023.
9	Cencora, Inc. 2 awardees, including Amerisourcebergen Drug Corp Top agencies VA (Department of Veterans Affairs)	$3,984,965	1.4%	Rank history: not on the FY2021–FY2023 lists and #49 in FY2025; new.
10	Bioteke Usa, LLC Top agencies HHS (Department of Health and Human Services)	$3,663,360	1.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
11	ASE Direct, Inc. Top agencies VA (Department of Veterans Affairs) DLA (Defense Logistics Agency)	$3,637,916	1.3%	Rank history: #19 in FY2021, #23 in FY2022, #33 in FY2023 and #38 in FY2025; up 22 since FY2023.
12	Immucor Inc. 2 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$3,240,554	1.1%	Rank history: #18 in FY2021, #20 in FY2022, #27 in FY2023 and #9 in FY2025; up 15 since FY2023.
13	Parsons Government Services Inc. Top agencies DHS (Department of Homeland Security)	$2,999,778	1.0%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
14	Sysmex Corporation 2 awardees, including Sysmex America, Inc. and Sysmex Deutschland GMBH Top agencies DHA (Defense Health Agency) Army (Department of the Army) VA (Department of Veterans Affairs)	$2,699,926	0.9%	Rank history: #23 in FY2021, #27 in FY2022, #31 in FY2023 and not on the FY2025 list; up 17 since FY2023.
15	Watmind Usa, Inc. Top agencies HHS (Department of Health and Human Services)	$2,400,000	0.8%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
16	Johnson & Johnson Through Ortho-Clinical Diagnostics, Inc. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force) VA (Department of Veterans Affairs)	$2,398,889	0.8%	Rank history: #28 in FY2021, #26 in FY2022, #25 in FY2023 and not on the FY2025 list; up 9 since FY2023.
17	Illumina, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$2,310,535	0.8%	Rank history: #15 in FY2021, #29 in FY2022, #29 in FY2023 and #11 in FY2025; up 12 since FY2023.
18	Thermo Electron Corporation 6 awardees, including Fisher Scientific Company L.L.C., One Lambda, Inc. and Microgenics Corporation Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$2,236,138	0.8%	Rank history: #3 in FY2021, #15 in FY2022, #20 in FY2023 and #80 in FY2025; up 2 since FY2023.
19	BIO - RAD Laboratories Gesellschaft MIT Beschraenkter Haftung 4 awardees, including Bio Rad Laboratories Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Army (Department of the Army)	$1,966,886	0.7%	Rank history: #31 in FY2021, #41 in FY2022, #40 in FY2023 and #23 in FY2025; up 21 since FY2023.
20	Stago International Through Diagnostica Stago Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$1,809,359	0.6%	Rank history: #36 in FY2021, #45 in FY2022, #58 in FY2023 and not on the FY2025 list; up 38 since FY2023.
21	Ortho-Clinical Diagnostics Inc. 6 awardees Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,769,721	0.6%	Rank history: #5 in FY2021, #43 in FY2022, #71 in FY2023 and #7 in FY2025; up 50 since FY2023.
22	Becton, Dickinson and Co 3 awardees Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) Army (Department of the Army)	$1,710,901	0.6%	Rank history: #9 in FY2021, #6 in FY2022, #28 in FY2023 and not on the FY2025 list; up 6 since FY2023.
23	Sebia, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,576,807	0.5%	Rank history: #42 in FY2021, #46 in FY2022, #38 in FY2023 and #15 in FY2025; up 15 since FY2023.
24	Qiagen N.V. 3 awardees, including Qiagen Sciences LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) EPA (Environmental Protection Agency)	$1,565,803	0.5%	Rank history: #32 in FY2021, #50 in FY2022, #39 in FY2023 and #20 in FY2025; up 15 since FY2023.
25	10X Genomics, Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,563,505	0.5%	Rank history: not on the FY2021 list, #33 in FY2022, #36 in FY2023 and #17 in FY2025; up 11 since FY2023.
26	Luminex Corporation 5 awardees, including Diasorin Inc. and Diasorin Molecular, LLC Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) Navy (Department of the Navy)	$1,507,047	0.5%	Rank history: #13 in FY2021, #22 in FY2022, #44 in FY2023 and #24 in FY2025; up 18 since FY2023.
27	Government Scientific Source Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) Army (Department of the Army)	$1,460,776	0.5%	Rank history: #20 in FY2021, #21 in FY2022, #32 in FY2023 and #16 in FY2025; up 5 since FY2023.
28	Biobridge Global Through Qualtex Laboratories Top agencies DHA (Defense Health Agency)	$1,307,591	0.5%	Rank history: #35 in FY2021, #81 in FY2022, #45 in FY2023 and not on the FY2025 list; up 17 since FY2023.
29	The Davinci Company, LLC Top agencies VA (Department of Veterans Affairs)	$1,305,952	0.5%	Rank history: not on the FY2021 list, #71 in FY2022, #35 in FY2023 and #22 in FY2025; up 6 since FY2023.
30	University of Maryland, Baltimore Top agencies VA (Department of Veterans Affairs)	$1,296,450	0.4%	Rank history: not on the FY2021–FY2023 lists and #94 in FY2025; new.
31	Brittney Brands LLC Top agencies VA (Department of Veterans Affairs)	$1,183,074	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
32	The Binding Site. Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,154,982	0.4%	Rank history: #45 in FY2021, #51 in FY2022, #48 in FY2023 and #25 in FY2025; up 16 since FY2023.
33	Summit Shoji Inc. Top agencies DLA (Defense Logistics Agency)	$1,131,839	0.4%	Rank history: not on the FY2021 list, #64 in FY2022, #50 in FY2023 and #33 in FY2025; up 17 since FY2023.
34	Branch Medical LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$1,125,552	0.4%	Rank history: #43 in FY2021, #47 in FY2022, #51 in FY2023 and #26 in FY2025; up 17 since FY2023.
35	Diasorin Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) USAF (Department of the Air Force)	$1,030,675	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 94 since FY2023.
36	Atos Medical Inc. Top agencies VA (Department of Veterans Affairs)	$967,000	0.3%	Rank history: #66 in FY2021, not on the FY2022 list, #73 in FY2023 and not on the FY2025 list; up 37 since FY2023.
37	Werfen USA LLC 3 awardees, including Immucor Italia S.P.A. Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$886,311	0.3%	Rank history: #52 in FY2021, #54 in FY2022, #47 in FY2023 and #14 in FY2025; up 10 since FY2023.
38	Abbott Laboratories Inc. 6 awardees, including Alere San Diego, Inc. and Abbott Diabetes Care Sales Corp Top agencies DHA (Defense Health Agency) CSOSA (Court Services and Offender Supervision Agency) HHS (Department of Health and Human Services)	$833,184	0.3%	Rank history: not on the FY2021–FY2023 lists and #4 in FY2025; new.
39	KKR & Co. Inc. Through Biosearch Technologies, Inc. Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$826,418	0.3%	Rank history: not on the FY2021–FY2022 lists, #72 in FY2023 and not on the FY2025 list; up 33 since FY2023.
40	Zoetis Inc. Top agencies USDA (Department of Agriculture)	$768,140	0.3%	Rank history: #67 in FY2021, #58 in FY2022, #60 in FY2023 and not on the FY2025 list; up 20 since FY2023.
41	Riverside Home Medical Supply Inc. Top agencies VA (Department of Veterans Affairs)	$755,469	0.3%	Rank history: #76 in FY2021, #62 in FY2022, not on the FY2023 list and not on the FY2025 list; up 121 since FY2023.
42	Charm Sciences Inc. Top agencies USDA (Department of Agriculture)	$748,750	0.3%	Rank history: #44 in FY2021, #60 in FY2022, #59 in FY2023 and #35 in FY2025; up 17 since FY2023.
43	Disabled Veterans Hawaii LLC 2 awardees Top agencies VA (Department of Veterans Affairs)	$722,300	0.3%	Rank history: #25 in FY2021, #32 in FY2022, #34 in FY2023 and not on the FY2025 list; down 9 since FY2023.
44	MEDPHARM Top agencies DHA (Defense Health Agency)	$677,341	0.2%	Rank history: #75 in FY2021, #70 in FY2022, #75 in FY2023 and not on the FY2025 list; up 31 since FY2023.
45	Core Trading Co Top agencies VA (Department of Veterans Affairs)	$631,595	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 81 since FY2023.
46	Geo-Med, LLC 2 awardees Top agencies VA (Department of Veterans Affairs)	$611,130	0.2%	Rank history: #60 in FY2021, not on the FY2022–FY2023 lists and #98 in FY2025; returned.
47	Terumo BCT Inc 2 awardees Top agencies DHA (Defense Health Agency)	$601,258	0.2%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 143 since FY2023.
48	Pharmacy Buying Association, Inc. Top agencies VA (Department of Veterans Affairs)	$583,202	0.2%	Rank history: not on the FY2021 list, #38 in FY2022, #43 in FY2023 and #76 in FY2025; down 5 since FY2023.
49	Ortho-Clinical Diagnostics Singapore PTE. Ltd. Korea Branch 2 awardees Top agencies DHA (Defense Health Agency)	$558,721	0.2%	Rank history: #46 in FY2021, not on the FY2022 list, #52 in FY2023 and #27 in FY2025; up 3 since FY2023.
50	Agilent Technologies, Inc. 2 awardees Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs) HHS (Department of Health and Human Services)	$520,465	0.2%	Rank history: not on the FY2021–FY2023 lists and #31 in FY2025; new.
51	Chenega Healthcare Services LLC Top agencies SSA (Social Security Administration)	$517,546	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
52	Meso Scale Diagnostics LLC Top agencies HHS (Department of Health and Human Services) DHA (Defense Health Agency) EPA (Environmental Protection Agency)	$475,309	0.2%	Rank history: #16 in FY2021, #35 in FY2022, #46 in FY2023 and #58 in FY2025; down 6 since FY2023.
53	Henry Schein, Inc. Top agencies DHA (Defense Health Agency)	$464,890	0.2%	Rank history: #57 in FY2021, #68 in FY2022, #68 in FY2023 and #43 in FY2025; up 15 since FY2023.
54	Roche Diabetes Care Inc Top agencies HHS (Department of Health and Human Services) DOJ (Department of Justice)	$453,439	0.2%	Rank history: not on the FY2021–FY2022 lists, #41 in FY2023 and not on the FY2025 list; down 13 since FY2023.
55	Sonic Healthcare Limited Through Cytopath Biopsy Lab Inc. Top agencies VA (Department of Veterans Affairs)	$450,000	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
56	Polymedco LLC 2 awardees, including Polymedco Cancer Diagnostic Products LLC Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency)	$423,181	0.1%	Rank history: #87 in FY2021, #67 in FY2022, #65 in FY2023 and #78 in FY2025; up 9 since FY2023.
57	Ahlstrom USA Inc. 2 awardees Top agencies DHA (Defense Health Agency)	$418,500	0.1%	Rank history: #74 in FY2021, #79 in FY2022, #67 in FY2023 and #51 in FY2025; up 10 since FY2023.
58	Olink Proteomics Inc. Top agencies HHS (Department of Health and Human Services)	$405,460	0.1%	Rank history: not on the FY2021 list, #74 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
59	Promega Corporation Top agencies DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$365,139	0.1%	Rank history: #54 in FY2021, #61 in FY2022, #57 in FY2023 and #46 in FY2025; down 2 since FY2023.
60	Cardinal Health, Inc. 3 awardees, including Cardinal Health 200, LLC and Cardinal Health 414, LLC Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$351,773	0.1%	Rank history: #70 in FY2021, #78 in FY2022, #56 in FY2023 and not on the FY2025 list; down 4 since FY2023.
61	Bloodworks Top agencies DHA (Defense Health Agency)	$317,039	0.1%	Rank history: not on the FY2021 list, #80 in FY2022, #74 in FY2023 and not on the FY2025 list; up 13 since FY2023.
62	D'S Ventures, LLC Top agencies VA (Department of Veterans Affairs)	$316,966	0.1%	Rank history: not on the FY2021 list, #55 in FY2022, #53 in FY2023 and not on the FY2025 list; down 9 since FY2023.
63	Reidy Medical Supply Inc. Top agencies VA (Department of Veterans Affairs)	$316,057	0.1%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
64	Siemens Corporation Through Siemens Healthcare Diagnostics Inc. Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$313,470	0.1%	Rank history: not on the FY2021–FY2023 lists and #8 in FY2025; new.
65	Franklin Young International, Incorporated Top agencies Navy (Department of the Navy) DHA (Defense Health Agency) USAF (Department of the Air Force)	$308,065	0.1%	Rank history: #73 in FY2021, #97 in FY2022, #86 in FY2023 and #61 in FY2025; up 21 since FY2023.
66	SL Meditech Co. Top agencies DHA (Defense Health Agency) USAF (Department of the Air Force)	$300,977	0.1%	Rank history: not on the FY2021–FY2023 lists and #45 in FY2025; up 75 since FY2023.
67	Diasorin S.P.A. Through Diasorin Inc. Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$294,641	0.1%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
68	Therakos LLC 2 awardees Top agencies HHS (Department of Health and Human Services)	$266,310	0.1%	Rank history: not on the FY2021–FY2023 lists and #79 in FY2025; new.
69	Alba Bioscience, Inc. Top agencies VA (Department of Veterans Affairs) DHA (Defense Health Agency) HHS (Department of Health and Human Services)	$265,615	0.1%	Rank history: #72 in FY2021, #87 in FY2022, #80 in FY2023 and #54 in FY2025; up 11 since FY2023.
70	Immuno Mycologies Inc. Top agencies VA (Department of Veterans Affairs)	$264,485	0.1%	Rank history: not on the FY2021–FY2023 lists and #48 in FY2025; up 74 since FY2023.
71	Zeus Scientific, LLC Top agencies VA (Department of Veterans Affairs)	$259,448	0.1%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; up 47 since FY2023.
72	Cidichem S.R.L. Top agencies Navy (Department of the Navy)	$256,394	0.1%	Rank history: not on the FY2021–FY2023 lists and #41 in FY2025; up 34 since FY2023.
73	The American National Red Cross Top agencies DHA (Defense Health Agency)	$249,989	0.1%	Rank history: #41 in FY2021, #31 in FY2022, #37 in FY2023 and not on the FY2025 list; down 36 since FY2023.
74	Grifols Diagnostic Solutions Inc. Top agencies DHA (Defense Health Agency) VA (Department of Veterans Affairs)	$244,453	0.1%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
75	Baebies, Inc. Top agencies HHS (Department of Health and Human Services)	$243,499	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
76	Hardy Diagnostics Top agencies HHS (Department of Health and Human Services)	$240,085	0.1%	Rank history: not on the FY2021–FY2022 lists, #93 in FY2023 and #77 in FY2025; up 17 since FY2023.
77	Keres Consulting Inc. Through Nativevet Materiel, LLC Top agencies HHS (Department of Health and Human Services)	$236,423	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
78	Medela LLC Top agencies VA (Department of Veterans Affairs)	$234,900	0.1%	Rank history: not on the FY2021–FY2023 lists and #42 in FY2025; new.
79	Tosoh Bioscience, Inc. Top agencies VA (Department of Veterans Affairs)	$222,999	0.1%	Rank history: not on the FY2021–FY2023 lists and #57 in FY2025; new.
80	SZY Holdings, LLC Top agencies DLA (Defense Logistics Agency)	$216,677	0.1%	Rank history: #93 in FY2021, not on the FY2022–FY2023 lists and #82 in FY2025; up 24 since FY2023.
81	STG Korea Inc Top agencies DHA (Defense Health Agency)	$212,469	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
82	Vmrd Inc. Top agencies USDA (Department of Agriculture)	$211,498	0.1%	Rank history: #96 in FY2021, not on the FY2022 list, #77 in FY2023 and #53 in FY2025; down 5 since FY2023.
83	Techne Corporation 4 awardees, including Asuragen Incorporated, Research and Diagnostic Systems, Inc. and Advanced Cell Diagnostics, Inc. Top agencies Army (Department of the Army) HHS (Department of Health and Human Services)	$203,325	0.1%	Rank history: #88 in FY2021, #95 in FY2022, #69 in FY2023 and not on the FY2025 list; down 14 since FY2023.
84	Solomon Park Research Laboratories, Inc. Top agencies Commerce (Department of Commerce)	$202,000	0.1%	Rank history: #79 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; returned.
85	McKesson Corporation Through Mckesson Medical-Surgical Government Solutions LLC Top agencies HHS (Department of Health and Human Services)	$201,750	0.1%	Rank history: not on the FY2021–FY2023 lists and #88 in FY2025; new.
86	Red Heritage Medical LLC Top agencies HHS (Department of Health and Human Services)	$199,990	0.1%	Rank history: not on the FY2021–FY2023 lists and #50 in FY2025; up 22 since FY2023.
87	Cerus Corporation Top agencies DHA (Defense Health Agency)	$197,694	0.1%	Rank history: not on the FY2021 list, #90 in FY2022, #89 in FY2023 and #56 in FY2025; up 2 since FY2023.
88	Helena Laboratories Corporation Top agencies VA (Department of Veterans Affairs)	$195,937	0.1%	Rank history: not on the FY2021–FY2023 lists and #67 in FY2025; up 27 since FY2023.
89	Accredo Health Group Inc. Top agencies VA (Department of Veterans Affairs)	$191,017	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
90	BMI Top agencies DHA (Defense Health Agency)	$181,250	0.1%	Rank history: #53 in FY2021, #56 in FY2022, #63 in FY2023 and not on the FY2025 list; down 27 since FY2023.
91	Radix Biosolutions LLC Top agencies HHS (Department of Health and Human Services)	$174,825	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
92	Cornerstone Diagnostics Inc. Top agencies VA (Department of Veterans Affairs)	$165,957	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 66 since FY2023.
93	Revvity Health Sciences, Inc. Top agencies HHS (Department of Health and Human Services)	$164,248	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
94	Lonza Walkersville Inc. Top agencies HHS (Department of Health and Human Services)	$164,233	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
95	Gendx Products LLC Top agencies VA (Department of Veterans Affairs)	$158,492	0.1%	Rank history: not on the FY2021 list, #99 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
96	Caredx, Inc. Top agencies VA (Department of Veterans Affairs)	$156,241	0.1%	Rank history: not on the FY2021–FY2023 lists and #69 in FY2025; up 7 since FY2023.
97	Eurofins EAG Agroscience LLC 2 awardees, including Gold Standard Diagnostics Horsham, LLC and Eurofins Genomics LLC Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior) USDA (Department of Agriculture)	$155,778	0.1%	Rank history: not on the FY2021–FY2022 lists, #88 in FY2023 and not on the FY2025 list; down 9 since FY2023.
98	3T Business Group LLC Top agencies VA (Department of Veterans Affairs)	$151,996	0.1%	Rank history: #33 in FY2021, #65 in FY2022, #94 in FY2023 and not on the FY2025 list; down 4 since FY2023.
99	Diagnostica Stago Inc. Top agencies DHA (Defense Health Agency)	$149,411	0.1%	Rank history: not on the FY2021–FY2023 lists and #18 in FY2025; new.
100	Otsuka Holdings Co. Ltd. Through Cambridge Isotope Laboratories, Inc. Top agencies HHS (Department of Health and Human Services)	$147,410	0.1%	Rank history: not on the FY2021–FY2023 lists and #65 in FY2025; new.

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100 of 253 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 $288 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 2024 ran Oct 1, 2023 – Sep 30, 2024. 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 FY2023. "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 FY2023 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 NAICS 325413 contractors in FY2024?

1. Danaher Corporation ($33.7M), 2. Atlantic Trading LLC ($26.6M), 3. Roche Holding AG ($14.8M), 4. Compagnie Merieux Alliance ($13.7M), 5. Hologic, Inc. ($9.61M), 6. Biomerieux Inc. ($7.44M), 7. PPD Development LP ($6.3M), 8. Siemens Aktiengesellschaft ($4.27M), 9. Cencora, Inc. ($3.98M), 10. Bioteke Usa, LLC ($3.66M).

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