Laboratory Services
Rh Typing, Prenatal
Print this pageUpdated Test Information:
| Test Description |
Rh Typing, Prenatal
|
|
|---|---|---|
| Synonym(s) |
Rhesus, Blood Type, Rh Factor |
|
| Test ID |
RH
|
|
| General Information |
Determines Rh type (pos or neg) only of prenatal/postpartum patients. Rh type of expectant mothers may indicate potential for hemolytic disease of the fetus/newborn. Rh typing is also used to determine Rh immune globulin candidacy for prenatal and postpartum patients. For Rh typing for any other patient population, please reach out directly to a local blood bank. |
|
| Specimen Type |
Whole Blood |
|
| Specimen Requirements |
Lavender |
|
| Alternate Specimen Type |
None |
|
| Specimen Collection / Processing Instructions |
Lavender - The specimen should be tested as soon as possible after collection. If testing is delayed, EDTA specimens should be stored at 2 to 8°C. |
|
| Minimum Sample Volume |
6 ml |
|
| Stability |
Refrigerated 10 days |
|
| Unacceptable Specimen Conditions |
Grossly hemolyzed, icteric, or lipemic samples. Frozen samples. Bacterial contamination. Samples from patients other than prenatal. |
|
| Limitations |
Variable testing results may be observed with partial antigens, which are rare variants of the D antigen. Very weak expressions of the D antigen may not be detected. |
|
| Methodology |
Hemagglutination/gel filtration |
|
| Estimated TAT |
1-3 days |
|
| Testing Schedule |
Monday-Friday |
|
| CPT Code(s) |
86901 |
|
| Reference Range |
NA |
|
| Reflex Conditions |
NA |
|
| Performing Lab |
Incyte Diagnostics |
|
| LOINC Code(s) |
10331-7 |
