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Test Code LAB90454 Obstetric Panel

Additional Codes


Reporting Title

Obstetric Panel


Profile Information:
Unit Codes Published Name Available Separately
LAB895 ABO and Rh Blood Typing Yes
LAB293 Complete Blood Count (CBC) with Differential Yes
LAB471 Hepatitis B Surface Antigen (HBsAg) Yes
LAB278 Indirect Antiglobulin Test (Antibody Screen) Yes
LAB494 Rapid Plasma Reagin (RPR) Yes
LAB496 Rubella Antibody, IgG Yes

Note:  Centers for Medicare & Medicaid Services (CMS)/American Medical Association (AMA)-approved panel

Performing Laboratory

OhioHealth Laboratory Services-Transfusion Services, Core Laboratory, and RMH Special Testing

Specimen Requirements

EDTA blood, K2 EDTA blood, and serum are required for this test.


Blood for ABO and Rh Blood Typing and Indirect Antiglobulin Test (Antibody Screen)

Draw blood in a 6-mL, pink-top (K2 EDTA) tube; and send a minimum of 5 mL of K2 EDTA whole blood.

Note:  1. Specimen and request form must be signed, dated, and timed by person drawing specimen.

2. Label specimen appropriately (K2 EDTA whole blood for ABO and Rh typing and indirect antiglobulin test).


Blood for CBC with Differential

Draw a full, lavender-top (EDTA) tube; and send EDTA whole blood. Mix by gently inverting 8 times. Forward unprocessed whole blood promptly at ambient temperature only. Do not refrigerate.

Note:  1. A manual differential is performed whenever laboratory’s established criteria for acceptance of automated differential is exceeded. A pathologist review is performed whenever laboratory’s criteria is met.

2. Label specimen appropriately (EDTA whole blood for CBC with differential).


Serum for HBsAg, RPR, and Rubella Antibody, IgG

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


1. A speckled-top serum gel tube (s) or a plain, red-top tube(s) is also acceptable.

2. Label specimen appropriately (serum for HBsAg, RPR, and rubella antibodies, IgG).

Specimen Transport Temperature

Ambient/Refrigerate NO/Frozen NO-Blood

Refrigerate/Ambient OK/Frozen OK-Serum

Reference Values

See individual test listings.

Day(s) Test Set Up

ABO and Rh blood typing and CBC, indirect antiglobulin test:  Monday through Sunday

HBsAg and rubella antibodies, IgG:  Monday through Saturday

RPR:  Monday through Friday

Test Classification and CPT Coding