Fetal Erythrocyte Detection/Quantitation, Peripheral Blood (maternal)

Fetal Erythrocyte Detection/Quantitation

Order Code:	FHGB
Order Form:	Flow Cytometry Requisition

Specimen:

Peripheral Blood (maternal)

Collection Medium:

Lavender top tube 3 mL (EDTA)

Minimum:

1 mL whole blood

Testing Schedule:

0800-1630 Monday through Friday.

Analytic Time:

24 hours (upon receipt in laboratory)

Reference Range:

Reference range is less than 0.45% Positive specimens reported as percent of maternal cells. Note: This reference range is established as the level at which greater than the usual 300 micrograms dose administered to Rh-negative women at delivery is required to prevent sensitization. The normal "Hemoglobin F value" for non-pregnant adults is less than 0.1%.

Comments:

Please identify as MATERNAL or FETAL specimen. Screening test for fetal-maternal bleed. This test replaces the Kleihauer-Betke stain. Please print, complete and submit the Advance Beneficiary Notice (ABN) along with the Immunopathology Requisition before shipping the specimen.

Methodology:

Flow Cytometry

Sample Processing:

Relevant clinical information must be submitted with specimen in order to provide correct interpretation of test results.
Specimen should be collected and packaged as close to shipping time as possible.

Sample Storage:

Refrigerate whole blood specimens 2-8°C.

Transport Instructions:

Place specimen into zip-lock type bag, seal bag.
Place requisition into outside pocket of bag.
Ship at ambient temperature.
Recommend express mail or equivalent if not on courier service.

CPT Code:

88184