Rh Typing
Also known as: Rh Factor
Use
Determine Rh type for transfusion candidates. Rh typing of expectant mothers may indicate potential for Rh hemolytic disease of the fetus/newborn. This typing is also used to determine Rh immune globulin candidacy for prenatal and postpartum patients.
Special Instructions
If a CBC and/or an antibody screening test is ordered with this test, please submit a separate 4 mL specimen for each test.
Limitations
Presence of potent cold autoagglutinins, positive direct antiglobulin test, and, in some cases, bacteremia may interfere with test interpretation. Variable testing results may be observed with partial antigens which are rare variants of the D antigen.
Methodology
Other
Biomarkers
LOINC Codes
- 10331-7
- 10331-7
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Whole Blood
Volume
4 mL
Minimum Volume
0.5 mL
Container
Lavender-top (EDTA) tube
Storage Instructions
Specimens should be tested as soon as possible. Samples that cannot be tested immediately should be stored at 2°C to 8°C. Do not freeze red cells.
Causes for Rejection
Gross hemolysis; bacterial or other contamination
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |
| Refrigerated | 7 days |
Other tests from different labs that may be relevant