Test Overview
Rosette test to detect more than 15 mL of Rh positive fetal red cells in an Rh negative mother.
Screening to assess the magnitude of fetal-maternal hemorrhage for Rh Immune Globulin therapy and to determine the need for additional testing.
Negative
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Test Details
4 - 8 hours (STAT processing not available)
- FMHG
- FETOMATERNAL HEMORRHAGE GAMMA
- Rosette Test
- FMH
Specimen Requirements
Collect specimen at least 1 hour after delivery in a pink top tube. Send intact specimen at room temperature; do not freeze. Specimens clotted, diluted with IV fluid, or in underfilled or improper tubes will be rejected.
Additional Information
If the Fetal Maternal Hemorrhage Screen is positive, a Kleihauer-Betke (K-B) test will be performed automatically at an additional charge. By ordering this test the clinician acknowledges that additional reflex testing will be performed and billed at a separate additional charge if indicated.