Obstetric Panel
Test code
CPT code(s)*
Clinical significance
Test resources
Test FAQ
Details
Includes
CBC (includes Differential and Platelets)
Antibody Screen, RBC with Reflex to Identification, Titer, and Antigen Typing
ABO Group and Rh Type
RPR (Diagnosis) with Reflex to Titer and Treponema pallidum Antibody, IA (Traditional)
Hepatitis B Surface Antigen with Reflex Confirmation*
Rubella Antibody (IgG), Immune Status
If Antibody Screen is Positive, then Antibody Identification, Titer and Antigen Typing will be performed at an additional charge (CPT code(s): 86870 (x) # of panel(s) performed, 86886 (x) # of titer(s) performed and 86905 (x) # of antigen typing(s).
Based on reactions presenting from Antibody Identification, then Direct Antiglobulin Test (DAT) with Reflex to Anti C3 and Anti IgG may be performed at an additional charge (CPT code(s): 86880).
If Direct Antiglobulin is Positive, then Anti C3 and Anti IgG will be performed at an additional charge (CPT code(s): 86880 x2).
If RPR screen is Reactive, then RPR Titer and Chemiluminescence - Treponemal Antibody Immunoassay for Confirmatory testing will be performed at an additional charge (CPT Code(s): 86593, 86780).
If Hepatitis B Surface Antigen is positive, then confirmatory testing based on the manufacturer's FDA approved recommendations will be performed at an additional charge (CPT code(s): 87341).
*Note: When only a single test, Hepatitis B Surface Antigen, is ordered to diagnose Hepatitis B in a pregnant woman, additional tests such as liver enzymes should be ordered to confirm the diagnosis.
Methodology
See individual tests
Alternative name(s)
OB Panel,Prenatal Panel
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | Whole blood in a full EDTA (lavender-top) tube and Whole blood in a full EDTA (pink-top) tube and 6 mL serum |
| Minimum volume | 0.5 mL microtainer or 1 mL EDTA (lavender-top) • 0.5 mL microtainer or 1 mL EDTA (pink-top) • 2.5 mL serum |
| Collection instructions | EDTA (lavender-top and pink-top): Maintain specimen at room temperature. Do not refrigerate. Traumatic draw can introduce thromboplastin and trap WBC and platelets. Refrigeration can precipitate fibrin and trap WBC and platelets. Dietary supplements containing biotin may interfere in assays and may skew analyte results to be either falsely high or falsely low. For patients receiving the recommended daily doses of biotin, draw samples at least 8 hours following the last biotin supplementation. For patients on mega-doses of biotin supplements, draw samples at least 72 hours following the last biotin supplementation. |
| Transport container | EDTA (lavender-top) tube and EDTA (pink-top) tube and Transport tube |
| Transport temperature | Room temperature |
| Reject criteria | Gross hemolysis • Grossly lipemic • Icteric |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
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