Estimation of Fetal Blood
Test Summary
Stain for fetal hemoglobin is to be done when a positive fetal screening test is obtained, or when the infant born to the D-negative mother has weak D-positive phenotype. The percentage of fetal cells in maternal blood is used to calculate the approximate volume of fetal maternal hemorrhage and the number of vials of Rh (D) Immune Globulin indicated. A stain for fetal hemoglobin may be ordered by the physician for cases of suspected trauma to a pregnant patient.
Aliases
- N/A
Specimen Collection
Special Instructions
N/A
Preferred Specimen
5 mL whole blood K2EDTA (lavender top) tube.
Minimum Volume
5 mL whole blood K2EDTA (lavender top) tube.
Instructions
Avoid hemolysis. Gently invert 10 times. Indicate source of fluid specimen must be transported to laboratory within 1 hour of collection.
Patient Preparation
N/A
Storage
K2EDTA (lavender top) tube
Transport Temperature
Refrigerated
Specimen Stability
- 24 hours
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Rejected for gross hemolysis, clotted.
Order Code
KBST
EPIC (Premier) Code
LAB197
Includes
N/A
CPT Code
- 85460
Billing Code
- 500323
CPT Statement
Methodology
Kleihauer-Betke Method
FDA Status
FDA approved
Physician Attestation of Informed Consent
N/A
Testing Laboratory
CompuNet Clinical Laboratories, LLC
2308 Sandridge Drive
Moraine OH, 45439
2308 Sandridge Drive
Moraine OH, 45439
Department
Hematology
Reference Range
Negative
Setup Schedule / Expected Turnaround Time
Daily MVH; Report available: 1 day
Specimen Collection
Special Instructions
N/A
Preferred Specimen
5 mL whole blood K2EDTA (lavender top) tube.
Minimum Volume
5 mL whole blood K2EDTA (lavender top) tube.
Instructions
Avoid hemolysis. Gently invert 10 times. Indicate source of fluid specimen must be transported to laboratory within 1 hour of collection.
Patient Preparation
N/A
Storage
K2EDTA (lavender top) tube
Transport Temperature
Refrigerated
Specimen Stability
- 24 hours
Limitations
N/A
Other Acceptable Specimens
N/A
Unacceptable Specimens
Rejected for gross hemolysis, clotted.
Result Information
Methodology
Kleihauer-Betke Method
Testing Laboratory
N/A
Reference Range
Negative
Setup Schedule / Expected Turnaround Time
Daily MVH; Report available: 1 day