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Federal Market Ranking

Top Federal Medical Laboratories Contractors by Contract Awards — NAICS 621511

Ranked by total federal contract obligations coded to NAICS 621511, summed across fiscal years 2021–2025 (the last five completed federal fiscal years), from the government’s own award records.

Total market under this code, FY2021–2025: 771 companies · 8,645 awards · $5.42B in obligations.

NAICS 621511’s official title is “Medical Laboratories.” We show you the code we ranked, not just a label, so you can judge the fit yourself.

Data current through August 2026
Source: USASpending/FPDS federal award records. Each dollar figure is a company’s TOTAL obligation under this NAICS code, summed across fiscal years 2021–2025 — never a contract ceiling, never an annual average, never non-services revenue.
RankCompanyAwards Under
This Code (FY2021–2025)
Total Obligations Under
This Code (FY2021–2025)
Set-Aside / Designation
13$1.50BNo set-aside · 100%
21,773$842.17MNot indicated · 72%
32,587$629.11MNot indicated · 62%
42$519.18MNo set-aside · 100%
52$406.78MNo set-aside · 100%
67$256.82MNo set-aside · 95%
727$135.48MNot indicated · 100%
85$112.41MNo set-aside · 100%
91$63.45MNo set-aside · 100%
105$54.11MNo set-aside · 97%
1111$53.99MNo set-aside · 88%
123$43.77MNo set-aside · 100%
1374$37.88MNot indicated · 81%
14115$37.58MNot indicated · 100%
155$37.35MNo set-aside · 100%
161$32.81MNo set-aside · 100%
1759$29.70MNo set-aside · 79%
188$23.14MNo set-aside · 100%
1983$22.43M
205$22.05MNot indicated · 100%
21394$19.21MNot indicated · 97%
22178$18.92MNot indicated · 53%
2387$18.29MNot indicated · 100%
241$14.63MNo set-aside · 100%
2519$14.44MNo set-aside · 68%

Award counts and obligations are both scoped to NAICS 621511 only — not a company’s total federal portfolio, and not a claim that the underlying work matches this code’s title beyond what the code itself covers. Companies are resolved to the platform’s own production family-root spine, and an identical registered name appearing under two legal registrations is merged into one row — a small number of near-duplicate registrations (a punctuation or naming variation the spine has not yet linked) may still appear separately. A set-aside badge renders ONLY when the company’s OWN current federal registration confirms it holds that status today; an unconfirmed status is never displayed. Designation badges are never a size determination this platform makes.

Dollars Are Not the Same as Capability
Rankings show who wins the dollars. What each company can actually do is inside.

This page ranks NAICS 621511 the way the federal government’s own records break it down: total obligations under this one code, summed across the last five completed fiscal years — never a contract ceiling, and never a claim about who does the best work. It does not, and cannot, tell you whether a company can actually run this kind of engagement, who they’ve done that work for, or how they’d fit on a team next to you.

That read takes more than a NAICS code: demonstrated capabilities pulled from these companies’ own contract descriptions and performance work statements, their customer relationships, every filter by revenue division and certification, and a full profile for anyone on this page.

43.3M
Transaction Records
3,047,668
Capabilities
from 1,011,616 awards
more than 55,000
Companies

Plus the labor rates behind the prices, the Other Transactions most tools never touch, and buying-office intelligence behind every customer.

That’s the data we put at your fingertips.

This ranking is pulled directly from the government’s own federal award records, current through August 2026. Rank changes, new entrants, and companies that drop off are never hidden or smoothed over.