Top 100 Contractors in NAICS 54138: Testing Laboratories and Services, FY2024

Name: Top 100 Contractors in NAICS 54138: Testing Laboratories and Services, 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 54138 contract dollars

Contract obligations: $681,485,514 Net of deobligations, by contracts coded NAICS 54138 or a code under it
Contractors: 1,308 Parent companies with an obligation
Largest contractor: Ginkgo Bioworks Holdings Inc. $81.7 million, 10.6% 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	Ginkgo Bioworks Holdings Inc. 2 awardees, including Ginkgo Bioworks, Inc. Top agencies HHS (Department of Health and Human Services)	$81,677,372	10.6%	Rank history: not on the FY2021 list, #6 in FY2022, #5 in FY2023 and not on the FY2025 list; up 4 since FY2023.
2	Agile Defense LLC 2 awardees Top agencies DISA (Defense Information Systems Agency)	$44,788,034	5.8%	Rank history: not on the FY2021–FY2023 lists and #2 in FY2025; new.
3	Astrion Group, LLC Top agencies NASA (National Aeronautics and Space Administration)	$41,591,723	5.4%	Rank history: not on the FY2021 list, #44 in FY2022, #2 in FY2023 and #1 in FY2025; down 1 since FY2023.
4	Alphabet Inc. Through Verily Life Sciences LLC Top agencies HHS (Department of Health and Human Services)	$31,600,230	4.1%	Rank history: not on the FY2021–FY2022 lists, #11 in FY2023 and not on the FY2025 list; up 7 since FY2023.
5	Transportation Research Center Inc. Top agencies DOT (Department of Transportation)	$30,461,550	4.0%	Rank history: #4 in FY2021, #5 in FY2022, #3 in FY2023 and #4 in FY2025; down 2 since FY2023.
6	RTX Corporation 2 awardees, including Raytheon Company Top agencies USAF (Department of the Air Force) Navy (Department of the Navy)	$27,713,100	3.6%	Rank history: #3 in FY2021, #3 in FY2022, #4 in FY2023 and #6 in FY2025; down 2 since FY2023.
7	The Broad Institute, Inc. Top agencies HHS (Department of Health and Human Services)	$24,559,792	3.2%	Rank history: #5 in FY2021, #15 in FY2022, #41 in FY2023 and #25 in FY2025; up 34 since FY2023.
8	The Bionetics Corporation Top agencies USAF (Department of the Air Force) DOI (Department of the Interior)	$22,872,313	3.0%	Rank history: #2 in FY2021, #4 in FY2022, #6 in FY2023 and #5 in FY2025; down 2 since FY2023.
9	Baylor College of Medicine Top agencies HHS (Department of Health and Human Services)	$16,773,757	2.2%	Rank history: #12 in FY2021, #13 in FY2022, #8 in FY2023 and #16 in FY2025; down 1 since FY2023.
10	Mccrone Group, Inc. Through Mccrone Associates Inc. Top agencies USAF (Department of the Air Force)	$11,689,084	1.5%	Rank history: #13 in FY2021, #16 in FY2022, #17 in FY2023 and not on the FY2025 list; up 7 since FY2023.
11	Gryphon Technologies, Inc. Through Gryphon Technologies, L.C. Top agencies USAF (Department of the Air Force)	$10,800,377	1.4%	Rank history: #8 in FY2021, #9 in FY2022, #9 in FY2023 and not on the FY2025 list; down 2 since FY2023.
12	Deutsches Zentrum FÜR Luft- UND Raumfahrt E.V. Top agencies NASA (National Aeronautics and Space Administration)	$10,060,374	1.3%	Rank history: #46 in FY2021, #26 in FY2022, not on the FY2023 list and #89 in FY2025; returned.
13	College of American Pathologists Top agencies VA (Department of Veterans Affairs) HHS (Department of Health and Human Services) DHA (Defense Health Agency)	$9,049,958	1.2%	Rank history: #14 in FY2021, #18 in FY2022, #16 in FY2023 and not on the FY2025 list; up 3 since FY2023.
14	Linde LLC Through Linde Special Projects LLC Top agencies USAF (Department of the Air Force)	$7,877,483	1.0%	Rank history: #15 in FY2021, not on the FY2022–FY2023 lists and not on the FY2025 list; up 133 since FY2023.
15	Altus, LLC 2 awardees Top agencies Army (Department of the Army)	$7,382,538	1.0%	Rank history: not on the FY2021 list, #24 in FY2022, #18 in FY2023 and #52 in FY2025; up 3 since FY2023.
16	Virginia Commonwealth University 2 awardees, including Virginia Polytechnic Institute & State University and VCU Health System Authority Top agencies DOT (Department of Transportation) VA (Department of Veterans Affairs)	$7,193,794	0.9%	Rank history: not on the FY2021–FY2022 lists, #12 in FY2023 and #58 in FY2025; down 4 since FY2023.
17	OLH Technical Services, LLC Top agencies DOJ (Department of Justice)	$6,977,595	0.9%	Rank history: not on the FY2021–FY2023 lists and #14 in FY2025; new.
18	State of California Controllers Office 5 awardees, including University of California, Davis, University of California San Diego and University of California, LOS Angeles Top agencies DOI (Department of the Interior) EPA (Environmental Protection Agency) Navy (Department of the Navy)	$6,338,344	0.8%	Rank history: #16 in FY2021, #19 in FY2022, #10 in FY2023 and not on the FY2025 list; down 8 since FY2023.
19	Semanticbits LLC Through ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$6,117,091	0.8%	Rank history: not on the FY2021–FY2023 lists and #28 in FY2025; new.
20	Infinity Biologix LLC Top agencies VA (Department of Veterans Affairs)	$6,000,000	0.8%	Rank history: #6 in FY2021, #10 in FY2022, not on the FY2023 list and #17 in FY2025; returned.
21	Aptim Federal Services LLC Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$5,956,418	0.8%	Rank history: #24 in FY2021, #40 in FY2022, #13 in FY2023 and not on the FY2025 list; down 8 since FY2023.
22	MRIGLOBAL Top agencies DOD (Department of Defense) HHS (Department of Health and Human Services)	$5,858,975	0.8%	Rank history: not on the FY2021–FY2022 lists, #22 in FY2023 and #23 in FY2025; unchanged since FY2023.
23	Emory University Top agencies HHS (Department of Health and Human Services)	$5,776,430	0.8%	Rank history: not on the FY2021 list, #17 in FY2022, #1 in FY2023 and #9 in FY2025; down 22 since FY2023.
24	Guidehouse Inc. Through Aptim Federal Services, LLC Top agencies Navy (Department of the Navy) EPA (Environmental Protection Agency)	$5,759,049	0.8%	Rank history: not on the FY2021–FY2023 lists and #10 in FY2025; new.
25	Teledyne Technologies Incorporated Through Teledyne Brown Engineering, Inc. Top agencies USAF (Department of the Air Force)	$5,696,773	0.7%	Rank history: #18 in FY2021, #32 in FY2022, #20 in FY2023 and #18 in FY2025; down 5 since FY2023.
26	New York Genome Center, Inc. Top agencies HHS (Department of Health and Human Services)	$5,689,991	0.7%	Rank history: #20 in FY2021, not on the FY2022–FY2023 lists and #63 in FY2025; up 84 since FY2023.
27	The Charles Stark Draper Laboratory, Inc. Top agencies USAF (Department of the Air Force)	$5,425,874	0.7%	Rank history: #19 in FY2021, #23 in FY2022, #26 in FY2023 and #22 in FY2025; down 1 since FY2023.
28	University of Washington Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs) Commerce (Department of Commerce)	$5,314,434	0.7%	Rank history: not on the FY2021–FY2023 lists and #59 in FY2025; new.
29	Eastern Research Group Inc. Top agencies EPA (Environmental Protection Agency)	$5,191,984	0.7%	Rank history: #22 in FY2021, #41 in FY2022, #35 in FY2023 and #30 in FY2025; up 6 since FY2023.
30	Bangham Engineering Inc. Top agencies DOT (Department of Transportation)	$4,737,264	0.6%	Rank history: not on the FY2021–FY2023 lists and #26 in FY2025; new.
31	Gryphon Technologies L.C. Top agencies USAF (Department of the Air Force)	$4,361,777	0.6%	Rank history: not on the FY2021–FY2023 lists and #27 in FY2025; new.
32	Nevada System of Higher Education Top agencies Army (Department of the Army) DOI (Department of the Interior)	$4,331,372	0.6%	Rank history: not on the FY2021–FY2023 lists and #92 in FY2025; up 79 since FY2023.
33	Solutions Through Innovative Technologies Inc. Top agencies USAF (Department of the Air Force)	$4,187,973	0.5%	Rank history: not on the FY2021 list, #55 in FY2022, #46 in FY2023 and #46 in FY2025; up 13 since FY2023.
34	Sports Medicine Research and Testing Laboratory Top agencies Navy (Department of the Navy) DHA (Defense Health Agency)	$4,094,860	0.5%	Rank history: not on the FY2021–FY2022 lists, #48 in FY2023 and #31 in FY2025; up 14 since FY2023.
35	Techlaw Holdings Inc. 2 awardees, including Techlaw Consultants Inc. Top agencies EPA (Environmental Protection Agency)	$4,055,951	0.5%	Rank history: #69 in FY2021, not on the FY2022–FY2023 lists and #29 in FY2025; returned.
36	South Carolina State of Through The Medical University of South Carolina Top agencies VA (Department of Veterans Affairs)	$4,007,300	0.5%	Rank history: #29 in FY2021, #37 in FY2022, #33 in FY2023 and not on the FY2025 list; down 3 since FY2023.
37	Akesogen, Inc. Top agencies VA (Department of Veterans Affairs)	$3,999,942	0.5%	Rank history: #10 in FY2021, #8 in FY2022, #24 in FY2023 and #32 in FY2025; down 13 since FY2023.
38	Consolidated Safety Services Incorporated Top agencies EPA (Environmental Protection Agency)	$3,812,911	0.5%	Rank history: #33 in FY2021, #45 in FY2022, #38 in FY2023 and #24 in FY2025; unchanged since FY2023.
39	The Johns Hopkins University Applied Physics Laboratory LLC Top agencies DHS (Department of Homeland Security)	$3,780,000	0.5%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
40	Merrick & Company Top agencies USDA (Department of Agriculture)	$3,607,285	0.5%	Rank history: not on the FY2021–FY2023 lists and #3 in FY2025; new.
41	KFI Engineers, PC Top agencies GSA (General Services Administration)	$3,600,314	0.5%	Rank history: not on the FY2021 list, #69 in FY2022, #52 in FY2023 and not on the FY2025 list; up 11 since FY2023.
42	RTI Laboratories Inc. Top agencies DOI (Department of the Interior) DHA (Defense Health Agency) Navy (Department of the Navy)	$3,501,380	0.5%	Rank history: not on the FY2021–FY2022 lists, #43 in FY2023 and #86 in FY2025; up 1 since FY2023.
43	Bonner Analytical Testing Co Top agencies EPA (Environmental Protection Agency)	$3,500,000	0.5%	Rank history: not on the FY2021 list, #38 in FY2022, #57 in FY2023 and #20 in FY2025; up 14 since FY2023.
44	Alliance Technical Group LLC Top agencies EPA (Environmental Protection Agency) HHS (Department of Health and Human Services)	$3,370,800	0.4%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 276 since FY2023.
45	Serco Inc Top agencies EPA (Environmental Protection Agency)	$2,944,400	0.4%	Rank history: not on the FY2021–FY2022 lists, #47 in FY2023 and #41 in FY2025; up 2 since FY2023.
46	Research Institute At Nationwide Children's Hospital Top agencies HHS (Department of Health and Human Services)	$2,881,308	0.4%	Rank history: not on the FY2021–FY2023 lists and #91 in FY2025; new.
47	General Electric Company 2 awardees, including GE Energy Power Conversion Naval Systems Inc. and GE Aviation Systems Limited Top agencies Navy (Department of the Navy) USAF (Department of the Air Force)	$2,794,829	0.4%	Rank history: #17 in FY2021, #11 in FY2022, #30 in FY2023 and #37 in FY2025; down 17 since FY2023.
48	Alutiiq Essential Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,749,194	0.4%	Rank history: not on the FY2021–FY2023 lists and #21 in FY2025; new.
49	Jung Research and Development Corp Top agencies MDA (DOD Missile Defense Agency)	$2,743,239	0.4%	Rank history: not on the FY2021 list, #54 in FY2022, #53 in FY2023 and #61 in FY2025; up 4 since FY2023.
50	University of California, Davis Top agencies EPA (Environmental Protection Agency) DOI (Department of the Interior)	$2,708,319	0.4%	Rank history: not on the FY2021–FY2023 lists and #13 in FY2025; new.
51	Afognak Native Corporation Through Alutiiq Essential Services LLC Top agencies NASA (National Aeronautics and Space Administration)	$2,634,008	0.3%	Rank history: #21 in FY2021, #27 in FY2022, #25 in FY2023 and not on the FY2025 list; down 26 since FY2023.
52	Red Six Solutions, LLC Top agencies USAF (Department of the Air Force)	$2,227,604	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
53	Institute for Environmental Health Inc. 2 awardees Top agencies USDA (Department of Agriculture) Army (Department of the Army)	$2,199,430	0.3%	Rank history: #83 in FY2021, not on the FY2022 list, #54 in FY2023 and not on the FY2025 list; up 1 since FY2023.
54	Elemance, LLC Top agencies DOT (Department of Transportation)	$2,165,078	0.3%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
55	Dynamic Research Inc. Top agencies DOT (Department of Transportation)	$2,122,395	0.3%	Rank history: not on the FY2021–FY2023 lists and #75 in FY2025; new.
56	Applus Idiada Karco Engineering, LLC Top agencies DOT (Department of Transportation)	$2,068,911	0.3%	Rank history: #90 in FY2021, not on the FY2022 list, #50 in FY2023 and #50 in FY2025; down 6 since FY2023.
57	Precision for Medicine, Inc. Top agencies HHS (Department of Health and Human Services)	$2,066,726	0.3%	Rank history: not on the FY2021–FY2023 lists and #39 in FY2025; new.
58	Compagnie Merieux Alliance 2 awardees, including Silliker, Inc. Top agencies USDA (Department of Agriculture)	$2,054,238	0.3%	Rank history: #56 in FY2021, #73 in FY2022, #45 in FY2023 and not on the FY2025 list; down 13 since FY2023.
59	Chemtex Environmental Laboratory, Inc. Top agencies EPA (Environmental Protection Agency)	$2,000,000	0.3%	Rank history: not on the FY2021 list, #47 in FY2022, not on the FY2023 list and #19 in FY2025; up 47 since FY2023.
60	Soil and Land Use Technology, Inc. Top agencies DOT (Department of Transportation)	$1,986,571	0.3%	Rank history: not on the FY2021–FY2023 lists and #38 in FY2025; new.
61	Aqua Survey, Inc. Top agencies Army (Department of the Army)	$1,982,347	0.3%	Rank history: #80 in FY2021, #58 in FY2022, #91 in FY2023 and #57 in FY2025; up 30 since FY2023.
62	Babcock Laboratories, Inc. Top agencies EPA (Environmental Protection Agency) Navy (Department of the Navy) USAF (Department of the Air Force)	$1,965,874	0.3%	Rank history: not on the FY2021–FY2022 lists, #55 in FY2023 and not on the FY2025 list; down 7 since FY2023.
63	Food Safety Net Services, Ltd. Top agencies USDA (Department of Agriculture)	$1,939,390	0.3%	Rank history: not on the FY2021 list, #57 in FY2022, #63 in FY2023 and not on the FY2025 list; unchanged since FY2023.
64	DNA Labs International Inc Top agencies DOJ (Department of Justice) DHS (Department of Homeland Security)	$1,907,685	0.2%	Rank history: not on the FY2021 list, #81 in FY2022, #70 in FY2023 and #67 in FY2025; up 6 since FY2023.
65	Intertek Group PLC 4 awardees, including Intertek USA Inc., Professional Service Industries, Inc. and Intertek Testing Services NA, Inc. Top agencies DLA (Defense Logistics Agency) Navy (Department of the Navy) EPA (Environmental Protection Agency)	$1,891,366	0.2%	Rank history: #54 in FY2021, #60 in FY2022, #44 in FY2023 and not on the FY2025 list; down 21 since FY2023.
66	Eagle Integrated Services, LLC Top agencies Navy (Department of the Navy)	$1,882,028	0.2%	Rank history: not on the FY2021–FY2022 lists, #59 in FY2023 and #56 in FY2025; down 7 since FY2023.
67	The Leland Stanford Junior University Top agencies HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,797,800	0.2%	Rank history: not on the FY2021–FY2023 lists and #36 in FY2025; up 68 since FY2023.
68	Clym Environmental Services LLC Top agencies HHS (Department of Health and Human Services)	$1,740,427	0.2%	Rank history: not on the FY2021–FY2023 lists and #93 in FY2025; up 37 since FY2023.
69	Intertek USA Inc. Top agencies DLA (Defense Logistics Agency)	$1,726,602	0.2%	Rank history: not on the FY2021–FY2023 lists and #33 in FY2025; new.
70	Exponent Inc. Top agencies DOT (Department of Transportation)	$1,723,677	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 33 since FY2023.
71	Virginia Polytechnic Institute & State University Top agencies DOT (Department of Transportation) Army (Department of the Army)	$1,658,534	0.2%	Rank history: not on the FY2021 list, #31 in FY2022, not on the FY2023 list and not on the FY2025 list; returned.
72	Eurofins Drinking Water and Wastewater West, LLC Top agencies EPA (Environmental Protection Agency) DHA (Defense Health Agency) DOI (Department of the Interior)	$1,606,700	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
73	Tribologik Corp Top agencies Navy (Department of the Navy) DOI (Department of the Interior)	$1,605,721	0.2%	Rank history: not on the FY2021–FY2022 lists, #61 in FY2023 and #60 in FY2025; down 12 since FY2023.
74	Battelle Memorial Institute Top agencies Army (Department of the Army) Navy (Department of the Navy)	$1,582,740	0.2%	Rank history: #73 in FY2021, #74 in FY2022, #96 in FY2023 and #62 in FY2025; up 22 since FY2023.
75	Regents of the University of Michigan Top agencies DOT (Department of Transportation) HHS (Department of Health and Human Services) VA (Department of Veterans Affairs)	$1,576,744	0.2%	Rank history: #96 in FY2021, #29 in FY2022, #34 in FY2023 and #87 in FY2025; down 41 since FY2023.
76	Southwest Research Institute Top agencies Army (Department of the Army) DLA (Defense Logistics Agency)	$1,538,496	0.2%	Rank history: #30 in FY2021, #42 in FY2022, not on the FY2023 list and not on the FY2025 list; up 411 since FY2023.
77	Northern Lake Service Inc. Top agencies EPA (Environmental Protection Agency) USDA (Department of Agriculture)	$1,491,615	0.2%	Rank history: not on the FY2021–FY2022 lists, #95 in FY2023 and not on the FY2025 list; up 18 since FY2023.
78	New Mexico Institute of Mining and Technology Top agencies Army (Department of the Army) Navy (Department of the Navy) DOI (Department of the Interior)	$1,427,687	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
79	Transnetyx Inc. Top agencies HHS (Department of Health and Human Services)	$1,399,572	0.2%	Rank history: not on the FY2021–FY2023 lists and #78 in FY2025; new.
80	SGS Canada Inc. Top agencies DOI (Department of the Interior)	$1,391,533	0.2%	Rank history: not on the FY2021–FY2023 lists and #43 in FY2025; new.
81	SGS Axys Analytical Services Ltd. Top agencies DOI (Department of the Interior) Commerce (Department of Commerce)	$1,381,545	0.2%	Rank history: not on the FY2021–FY2023 lists and #71 in FY2025; new.
82	Eurofins Eaton Analytical LLC Top agencies EPA (Environmental Protection Agency)	$1,381,310	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
83	Kratos Sre, Inc. Top agencies NASA (National Aeronautics and Space Administration)	$1,368,691	0.2%	Rank history: not on the FY2021–FY2023 lists and #51 in FY2025; new.
84	Hamilton Associates Inc. Top agencies DOE (Department of Energy) USAF (Department of the Air Force)	$1,366,488	0.2%	Rank history: #64 in FY2021, #77 in FY2022, #78 in FY2023 and not on the FY2025 list; down 6 since FY2023.
85	ICF International, Inc. Through ICF Incorporated, L.L.C. Top agencies EPA (Environmental Protection Agency)	$1,310,045	0.2%	Rank history: #28 in FY2021, #34 in FY2022, #27 in FY2023 and not on the FY2025 list; down 58 since FY2023.
86	Credere Associates, LLC Top agencies Navy (Department of the Navy)	$1,293,970	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 94 since FY2023.
87	PPI Technical Services LLC Top agencies USAF (Department of the Air Force)	$1,276,110	0.2%	Rank history: not on the FY2021–FY2022 lists, #15 in FY2023 and #76 in FY2025; down 72 since FY2023.
88	City of San Diego Top agencies IBWC (International Boundary and Water Commission U.S.-Mexico)	$1,254,272	0.2%	Rank history: not on the FY2021–FY2023 lists and #77 in FY2025; new.
89	The Cleveland Clinic Foundation Top agencies VA (Department of Veterans Affairs)	$1,227,376	0.2%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; up 93 since FY2023.
90	Calspan, LLC Top agencies DOT (Department of Transportation)	$1,225,737	0.2%	Rank history: not on the FY2021–FY2023 lists and #72 in FY2025; new.
91	Doc Development, Inc. Top agencies USAF (Department of the Air Force)	$1,211,365	0.2%	Rank history: not on the FY2021–FY2022 lists, #83 in FY2023 and #82 in FY2025; down 8 since FY2023.
92	Bureau Veritas North America Inc 2 awardees Top agencies HHS (Department of Health and Human Services) USAF (Department of the Air Force) DHA (Defense Health Agency)	$1,203,304	0.2%	Rank history: not on the FY2021–FY2022 lists, #82 in FY2023 and #95 in FY2025; down 10 since FY2023.
93	Techfocus LLC Top agencies USAF (Department of the Air Force) GSA (General Services Administration) DHS (Department of Homeland Security)	$1,168,706	0.2%	Rank history: not on the FY2021–FY2022 lists, #100 in FY2023 and #54 in FY2025; up 7 since FY2023.
94	Spectral Energies LLC Top agencies Army (Department of the Army)	$1,149,716	0.1%	Rank history: not on the FY2021–FY2023 lists and #80 in FY2025; new.
95	Applied Research In Acoustics LLC Top agencies Army (Department of the Army)	$1,149,494	0.1%	Rank history: not on the FY2021–FY2023 lists and #81 in FY2025; new.
96	DCS Corporation 2 awardees Top agencies USAF (Department of the Air Force)	$1,146,759	0.1%	Rank history: not on the FY2021 list, #71 in FY2022, not on the FY2023 list and #96 in FY2025; up 109 since FY2023.
97	L3HARRIS Aviation Products Inc Through L3Harris Fuzing and Ordnance Systems, Inc. Top agencies USAF (Department of the Air Force)	$1,135,160	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
98	Psomagen Inc. Top agencies HHS (Department of Health and Human Services)	$1,129,058	0.1%	Rank history: not on the FY2021–FY2023 lists and not on the FY2025 list; new.
99	Valogic Bio, LLC Top agencies HHS (Department of Health and Human Services) Navy (Department of the Navy)	$1,125,509	0.1%	Rank history: not on the FY2021 list, #82 in FY2022, #66 in FY2023 and #65 in FY2025; down 33 since FY2023.
100	Techlaw, Inc. Through Techlaw Consultants Inc. Top agencies EPA (Environmental Protection Agency)	$1,120,175	0.1%	Rank history: #37 in FY2021, #28 in FY2022, #31 in FY2023 and not on the FY2025 list; down 69 since FY2023.

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100 of 1,308 contractors listed here. See the rest on GovTribe.

Rankings for the codes under NAICS 54138

Code	Net obligations	Largest contractor
541380 Testing Laboratories and Services	$681,485,514	Ginkgo Bioworks Holdings Inc.

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 $767 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 54138 contractors in FY2024?

1. Ginkgo Bioworks Holdings Inc. ($81.7M), 2. Agile Defense LLC ($44.8M), 3. Astrion Group, LLC ($41.6M), 4. Alphabet Inc. ($31.6M), 5. Transportation Research Center Inc. ($30.5M), 6. RTX Corporation ($27.7M), 7. The Broad Institute, Inc. ($24.6M), 8. The Bionetics Corporation ($22.9M), 9. Baylor College of Medicine ($16.8M), 10. Mccrone Group, Inc. ($11.7M).

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