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Test Code BLOD1429 Obstetrics Panel

Useful For

Prenatal screening for pregnant women

Profile Information

Test Code Test Name Methodology
BLOD5001 OB Type & Screen Prenatal Automated
BLOD0008 CBC with Automated Differential Automated
BLOD0679 Hepatitis B Surface Antigen Chemiluminescence
BLOD0519 Syphilis Antibodies IgG and IgM ELISA
BLOD0337 Rubella IgG Antibody Chemiluminescence


Performing Laboratory

Bozeman Health Laboratory Services

Specimen Requirements

Three specimens are required.


OB Type and Screen Prenatal

Specimen Type: Whole blood

Container/Tube: Pink top preferred (K2 EDTA),  or Purple top (EDTA)

Specimen Volume: 6 mL

Specimen Minimum Volume: 3 mL

Collection Instructions:  Do not centrifuge. Forward unprocessed whole blood promptly.

Specimen Rejection: Gel tubes are not acceptable.  Specimen must be labeled properly.  This test is affected by gross hemolysis.

Note: If specimen being drawn may be used for a possible transfusion, refer to test  BLOD0947 TYPE AND SCREEN for banded specimen collection instructions and blood product transfusion instructions.


CBC with Automated Differential

Note: Specimen must arrive within 24 hours of draw. 

Specimen Type: Whole blood

Container/Tube: Lavender top (EDTA) or lavender top (EDTA) Microtainer

Specimen Volume: 4 mL

Collection Instructions:  If there is a delay in transport of >24 hours, refrigerate specimen and send specimen refrigerated.


Hepatitis, Syphilis IgG and IgM, and Rubella

Specimen Type: Serum
Container/Tube: Red top or gold top
Specimen Volume: 2 mL
Specimen Minimum Volume: 1 mL
Collection Instructions: Spin down within 2 hours of draw and remove serum from cells.


Specimen Transport Temperature


Specimen Stability


Specimen Type Temperature Time
Whole blood EDTA (Type and Screen) Ambient  24 hours
  Refrigerated 10 days
Whole blood EDTA (CBC) Ambient 24 hours
  Refrigerated 48 hours
Serum (Hepatitis, Rubella, Syphilis) Refrigerated 7 days
  Frozen 1 month


Reference Values

See individual test listings

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding




87341 (if needed)