Sign in →

BCH Order Code LAB550 Obstetric Panel

Performing Laboratory

Boulder Community Health

Specimen Requirements

Profile Information:
ABO Blood Type Rh(D) Type
Antibody Screen (Indirect Coombs)


Complete Blood Count (CBC) With Differential Syphilis Total Antibody
Hepatitis Bs Antigen (HBsAg)  


Serum and whole blood are required for this panel.


Blood for ABO Blood Type, Antibody Screen (Indirect Coombs), CBC With Differential, and Rh(D) Type

Draw blood in a lavender-top (EDTA) tube(s) and send 4 mL of EDTA whole blood. Immediately invert several times to mix blood.

Note:  Label specimen appropriately (EDTA whole blood for ABO blood type, antibody screen [indirect Coombs], CBC with differential, and Rh[D] type).


Serum for RPR and Rubella

Draw blood in a serum gel tube(s). Spin down and send 2 mL of serum refrigerated. Moderate amounts of hemolysis or lipemia will not interfere.

Note:   Label specimen appropriately (serum for RPR and rubella).


Serum for HBsAg

Draw blood in a plain, red-top tube(s). Spin down and send 1 mL of serum refrigerated. If there is a delay in shipment of >5 days or if mailing time exceeds 5 days, send specimen frozen in plastic vial.

Note:  1. Draw date is required on request form.

2. Label specimen appropriately (serum for HBsAg).

Reference Values

See individual test listings.

Day(s) Test Set Up

ABO Blood Type, Antibody Screen (Indirect Coombs), Complete Blood Count (CBC), Rh(D) Type: Monday through Sunday

Hepatitis Bs Antigen (HBsAg): Monday through Friday

Rapid Plasma Reagin (RPR) Test, Rubella: Tuesday, Friday

Test Classification and CPT Coding