Kleihauer Betke Stain
Test Mnemonic
HBFSTN
CPT Codes
- 85460 - QTY (1)
LOINC ®
32140-6
Aliases
- Hemoglobin Fetal Stain
- Kleihauer-Betke Fetal Hgb Stain
- KB stain
Performing Laboratory
Cleveland Clinic Laboratories
Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 4 mL | Whole blood | EDTA (Lavender) | Refrigerated |
Minimum Specimen Requirements
| Volume | Type | Container | Collect Temperature | Transport Temperature | Special Instructions |
|---|---|---|---|---|---|
| 1 mL |
Stability
| Environmental Condition | Description |
|---|---|
| Refrigerated | Sample must be received in testing laboratory and test completed within 24 Hours of collection |
| Frozen | Frozen samples are not acceptable for this test and will be rejected. |
Days Performed
Sun - Sat
Turnaround Time
1 day
Methodology
| Name | Description |
|---|---|
| Stain |
Reference Range
| % Fetal cells present | |||||
|---|---|---|---|---|---|
| Sex | Age From | Age To | Type | Range | Range Unit |
| Normal | <1 | % fetal cells present |
Special Info
Indicate age, and if possible race, ethnic background of patient and date of most recent blood transfusion on request form.
Clinical Info
Evaluation of fetal-maternal hemorrhage. Test may help distinguish Hereditary Persistence of Fetal Hb vs. Thalassemia minor.