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Obstetric Panel

Performing Laboratory

Providence Alaska Medical Center


Profile Information:
ABO and Rh Hepatitis B Surface Antigen
Complete Blood Count (CBC) with Automated Differential Rapid Plasma Reagin (RPR)
Coombs, Indirect (Antibody Screen) Rubella











Note:  If patient’s insurance is Medicare, an Advance Beneficiary Notice of Noncoverage (ABN) may be required. See “Advance Beneficiary Notice of Noncoverage (ABN)” in “Forms” in “Special Instructions.”

Specimen Requirements

Blood and serum are required for this test.


Blood for ABO and Rh and Coombs, Indirect
Draw blood in a pink-top (EDTA) tube, and send 6 mL (minimum volume:  3 mL) of EDTA whole blood refrigerated. (Hemolyzed specimen is not acceptable.)

Note:  Label specimen appropriately (whole blood for ABO and Rh and Coombs, indirect).


Blood for CBC

Specimen must arrive within 12 hours of draw.

Draw blood in a lavender-top (K2 EDTA) tube(s). Tube must be at least half full. Send 3 mL (minimum volume:  0.5 mL in an EDTA MICROTAINER®) of EDTA whole blood.

Note:  1. Specimen is stable for 24 hours at ambient temperature. If there is a delay in transport of >12 hours, a peripheral slide should accompany specimen.

2. Label specimen appropriately (whole blood for CBC).


Serum for Hepatitis B Surface Antigen

Draw blood in a gold-top serum gel tube(s). Spin down, separate serum from cells, and send 2 mL of serum refrigerated.

Note:  Label specimen appropriately (serum for hepatitis B surface antigen).


Serum for RPR and Rubella
Draw blood in a gold-top serum gel tube(s). Spin down and send 2 mL (minimum volume:  0.5 mL) of serum refrigerated.
Note:  Label specimen appropriately (serum for RPR and rubella).

Reference Values

See individual test listings.

Day(s) Test Set Up

ABO and Rh; CBC; Coombs, Indirect; and Hepatitis B Surface Antigen:  Monday through Sunday

RPR and Rubella:  Monday through Friday, Sunday

Test Classification and CPT Coding


Special Instructions