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HelpTest Code LAB15186 KLEIHAUER TEST, BLOOD
Specimen Information
| Container | Specimen | Temperature | Collect Vol | Submit Vol | Min Vol | Stability |
| Lav Top Tube | Whole Blood | Refrigerate | 4 mL | 4 mL | 1.5 mL | 7 days |
Test Schedule / Analytical Time / Test Priority
Monday – Friday 7 am to 3:30 only / 1 day / Not available STAT
Method
Acid Elution of Adult Hemoglobin
CPT(s)
| Description | CPT Code |
| Kleihauer Test, Blood | 85460 |
Instrumentation
Manual Method
Reference Range
Negative
Section
Hematology
Performing Location
University of Vermont Medical Center
Is the UVMMC lab NY State Certified to perform this testing? Yes/No
Yes
Result Components
| Reporting Name | Epic Code | Atlas Code | Mayo Access ID | LOINC |
| Kleihauer Test | 12301011923 | LRR11923 | FAH5944 | 32140-6 |
| mL F/M Hemorrhage | 12301011924 | LRR11924 | FAH5945 | 48555-7 |
| Dose of RhIg | 12301011925 | LRR11925 | FAH5946 | 1313-6 |
Clinical Indications
|
Definitely Indicated |
Clinical Judgment |
Not Indicated |
|
RhIG (if positive fetal screen) |
Maternal Trauma; External cephalic version |
|
|
Fetal loss > 20wks |
Neonatal Anemia |
Non-traumatic abruption |
|
Fetal hydrops |
Cord blood sample |
Vaginal bleeding |
|
High clinical concern for massive fetal maternal hemorrhage with MCA dopplers |
|
If the patient is Rh (-) a Fetal Screen Test should be initially ordered. A Kleihauer-Betke will automatically be reflexed and run on all positive fetal screens.
The Kleihauer-Betke (KB) test is designed to quantitate fetal red blood cells, but the results have been shown to be imprecise with a large coefficient of variation (CV). It is often utilized to quantitate large fetomaternal hemorrhages at the time of delivery in Rh (-) women for appropriate dosing of RhIG to prevent Rh alloimmunization. Although it can be used during pregnancy in both Rh (-) and Rh (+) women to detect fetomaternal hemorrhage, the evidence to support its utility are limited and results should be interpreted with caution.