NAICS 621511 · Health Care and Social Assistance

Medical Laboratories

3,325 active contractors list NAICS 621511 (Medical Laboratories) in SAM.gov; 2,407 are small under its SBA size standard and 858 list it as their primary NAICS.

Learn more about NAICS size standards

Search with filters Small businesses only

Active contractors: 3,325
Small under 621511SBA size standard for this code: 2,407
Primary NAICSTheir main line of business: 858
Hidden registrationsExcluded, expired or inactive: 52

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Live RFPs in this NAICS
Open SAM.gov solicitations coded 621511, matched to teaming partners.
Expiring awards
Incumbent contracts in 621511 heading to recompete in the next 18 months.
Small under 621511
Partners SAM.gov lists as small under this code: the size check a set-aside uses.

Size is NAICS-specific: a firm can be small under one code and other than small under another. Learn more about small business set-asides

Contractors listing NAICS 621511

Claimed profiles come first by membership level, then companies with 621511 as their primary NAICS, then federal obligations over the last 36 months. SPRS shows the highest blind bracket met, never the score. Learn more about blind SPRS brackets

52 registrations hidden because they are excluded, expired or inactive in SAM.gov. Include them

Showing 881–900 of 3,325 contractors

GOLDBELT APEX, LLC
UEIMQ2ETHPEB7T6CAGE8TBG2
Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SDB8(a)ANC
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiringObligated, 36 mo: $181.5M ($181,494,280)
THE JOHNS HOPKINS UNIVERSITY
UEIFTMTDMBR29C7CAGE5L406
Location: BALTIMORE, MD
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $181.3M ($181,320,609)
FISHER BIOSERVICES INC
UEILB4PCGLSJ9E6CAGE0M6N4
Location: ROCKVILLE, MD
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $170.3M ($170,270,593)
READIFORCE GOVERNMENT SOLUTIONS LLC
UEILKHCAXN8BUF7CAGE7Q9Y4
Location: SAN ANTONIO, TXSocio-economic status (SAM.gov): SB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $169.8M ($169,786,519)
ACUITY INTERNATIONAL, LLC
UEIL41JMCZK3GW6CAGE87VD5
Location: RESTON, VASocio-economic status (SAM.gov): SB
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $166.7M ($166,711,087)
ADDON SERVICES LLC
UEIC1J1B6AJTQK4CAGE6VC96
Location: WARREN, MISocio-economic status (SAM.gov): SBSDBWOSBEDWOSB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $162.2M ($162,245,172)
CARLEY CORPORATION
UEIESJUFTK8SU88CAGE0TB78
Location: ORLANDO, FLSocio-economic status (SAM.gov): SB
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $159.9M ($159,947,682)
DYNAMIC SYSTEMS TECHNOLOGY, INC.
DBA DYNAMIC SYSTEMS TECHNOLOGY INC
UEIL9A4B33LXR15CAGE1RPL7
Location: FAIRFAX, VA
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $159.3M ($159,316,495)
AMERICAN NATIONAL RED CROSS, THE
DBA AMERICAN RED CROSS
UEIG69LHXJ3ABL5CAGE7D348
Location: WASHINGTON, DC
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM expiringObligated, 36 mo: $151.6M ($151,569,335)
ACUITY-CHS, LLC
DBA PT&C LWG FORENSIC CONSULTING SERVICES
UEIDGJ7M32ZMKN3CAGE0B664
Location: CAPE CANAVERAL, FL
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $137.1M ($137,118,645)
MILLBROOK SUPPORT SERVICES INC
UEIE2UBKGNNGCX7CAGE7SPD3
Location: MANHASSET, NY
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $129.4M ($129,364,443)
COGNITO SYSTEMS LLC
UEIEKYYYAQFUSV4CAGE8KNU1
Location: NEWPORT NEWS, VASocio-economic status (SAM.gov): SBWOSBEDWOSB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $124.8M ($124,826,131)
FEDERAL STAFFING RESOURCES, LLC
UEIGBAPKN8JAKC7CAGE3W0Q8
Location: ANNAPOLIS, MD
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $122.7M ($122,675,619)
ASRC FEDERAL ADVANCED RESEARCH, LLC
UEIHQ6BEJMMEYJ3CAGE8EWY6
Location: BELTSVILLE, MDSocio-economic status (SAM.gov): SBSDB8(a)ANC
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $121.7M ($121,674,895)
ARROW ARC LLC
UEIK6BVRM8LQ4Q8CAGE9DC55
Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SBVOSBSDVOSB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $115.9M ($115,905,066)
KNOWESIS, INC.
UEIMB5LN5B93QW7CAGE512C0
Location: FAIRFAX, VASocio-economic status (SAM.gov): SBWOSBVOSBSDVOSB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $115.2M ($115,195,395)
A-TEK, INC.
UEIHCCFTD1R3UL3CAGE05PE2
Location: MC LEAN, VASocio-economic status (SAM.gov): SBWOSB
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $114M ($113,994,907)
BOWHEAD ENTERPRISE, SCIENCE AND TECHNOLOGY, LLC
UEIM5LUG7KAKEJ4CAGE7Z7B6
Location: SPRINGFIELD, VASocio-economic status (SAM.gov): SBSDB8(a)ANC
Secondary NAICSSmall under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $107.9M ($107,943,355)
INTERNATIONAL SOS GOVERNMENT MEDICAL SERVICES, INC.
DBA IHMS
UEIEEANN2A3SSQ4CAGE8D2S2
Location: HOUSTON, TX
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $98.8M ($98,839,771)
AB STAFFING SOLUTIONS LLC
UEIMKNJPM6CKSP9CAGE1ZF62
Location: GILBERT, AZ
Secondary NAICSNot listed as small under 621511
CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9).
No compliance data on file
SAM activeObligated, 36 mo: $97.8M ($97,761,442)

Contractors listing NAICS 621511, page 45 of 167
Company	This code	Compliance	SAM.gov	Obligated, 36 mo
GOLDBELT APEX, LLC UEIMQ2ETHPEB7T6CAGE8TBG2 Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SDB8(a)ANC	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expiring	$181.5M ($181,494,280)
THE JOHNS HOPKINS UNIVERSITY UEIFTMTDMBR29C7CAGE5L406 Location: BALTIMORE, MD	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$181.3M ($181,320,609)
FISHER BIOSERVICES INC UEILB4PCGLSJ9E6CAGE0M6N4 Location: ROCKVILLE, MD	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$170.3M ($170,270,593)
READIFORCE GOVERNMENT SOLUTIONS LLC UEILKHCAXN8BUF7CAGE7Q9Y4 Location: SAN ANTONIO, TXSocio-economic status (SAM.gov): SB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$169.8M ($169,786,519)
ACUITY INTERNATIONAL, LLC UEIL41JMCZK3GW6CAGE87VD5 Location: RESTON, VASocio-economic status (SAM.gov): SB	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$166.7M ($166,711,087)
ADDON SERVICES LLC UEIC1J1B6AJTQK4CAGE6VC96 Location: WARREN, MISocio-economic status (SAM.gov): SBSDBWOSBEDWOSB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$162.2M ($162,245,172)
CARLEY CORPORATION UEIESJUFTK8SU88CAGE0TB78 Location: ORLANDO, FLSocio-economic status (SAM.gov): SB	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$159.9M ($159,947,682)
DYNAMIC SYSTEMS TECHNOLOGY, INC. DBA DYNAMIC SYSTEMS TECHNOLOGY INC UEIL9A4B33LXR15CAGE1RPL7 Location: FAIRFAX, VA	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$159.3M ($159,316,495)
AMERICAN NATIONAL RED CROSS, THE DBA AMERICAN RED CROSS UEIG69LHXJ3ABL5CAGE7D348 Location: WASHINGTON, DC	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM expiring	$151.6M ($151,569,335)
ACUITY-CHS, LLC DBA PT&C LWG FORENSIC CONSULTING SERVICES UEIDGJ7M32ZMKN3CAGE0B664 Location: CAPE CANAVERAL, FL	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$137.1M ($137,118,645)
MILLBROOK SUPPORT SERVICES INC UEIE2UBKGNNGCX7CAGE7SPD3 Location: MANHASSET, NY	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$129.4M ($129,364,443)
COGNITO SYSTEMS LLC UEIEKYYYAQFUSV4CAGE8KNU1 Location: NEWPORT NEWS, VASocio-economic status (SAM.gov): SBWOSBEDWOSB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$124.8M ($124,826,131)
FEDERAL STAFFING RESOURCES, LLC UEIGBAPKN8JAKC7CAGE3W0Q8 Location: ANNAPOLIS, MD	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$122.7M ($122,675,619)
ASRC FEDERAL ADVANCED RESEARCH, LLC UEIHQ6BEJMMEYJ3CAGE8EWY6 Location: BELTSVILLE, MDSocio-economic status (SAM.gov): SBSDB8(a)ANC	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$121.7M ($121,674,895)
ARROW ARC LLC UEIK6BVRM8LQ4Q8CAGE9DC55 Location: ALEXANDRIA, VASocio-economic status (SAM.gov): SBVOSBSDVOSB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$115.9M ($115,905,066)
KNOWESIS, INC. UEIMB5LN5B93QW7CAGE512C0 Location: FAIRFAX, VASocio-economic status (SAM.gov): SBWOSBVOSBSDVOSB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$115.2M ($115,195,395)
A-TEK, INC. UEIHCCFTD1R3UL3CAGE05PE2 Location: MC LEAN, VASocio-economic status (SAM.gov): SBWOSB	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$114M ($113,994,907)
BOWHEAD ENTERPRISE, SCIENCE AND TECHNOLOGY, LLC UEIM5LUG7KAKEJ4CAGE7Z7B6 Location: SPRINGFIELD, VASocio-economic status (SAM.gov): SBSDB8(a)ANC	Secondary NAICSSmall under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$107.9M ($107,943,355)
INTERNATIONAL SOS GOVERNMENT MEDICAL SERVICES, INC. DBA IHMS UEIEEANN2A3SSQ4CAGE8D2S2 Location: HOUSTON, TX	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$98.8M ($98,839,771)
AB STAFFING SOLUTIONS LLC UEIMKNJPM6CKSP9CAGE1ZF62 Location: GILBERT, AZ	Secondary NAICSNot listed as small under 621511	CMMCNo CMMCSPRSNoneFacility clearance: visible to paid members. Clearance levels are shown only to paying members; TeamingIndex does not advertise clearances (NISPOM 32 CFR 117.9). No compliance data on file	SAM active	$97.8M ($97,761,442)

Codes these contractors list most often alongside 621511: natural teaming adjacencies.

Medical Laboratories

Work this industry

Contractors listing NAICS 621511

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