Human Erythrocyte Antigen Phenotype
Label Mnemonic: HEAP
Epic Lab Code: LAB7411
Downtime Form: A-1a Miscellaneous Request
DeGowin Blood Center - Blood Bank
C271 GH
356-2561
Specimen(s):
Whole Blood
Specimen Instructions:
Testing requires a dedicated collection tube.
Collection Medium:
or or
Pink top tube 6 mL (K2-EDTA) Lavender top tube 3 mL (EDTA) Buccal Swab
Minimum:
Adult Preferred Minimum: 6 mL whole blood from a pink K2-EDTA tube
Pediatric Preferred Minimum: 3 mL whole blood from a lavender EDTA tube
Pediatric Absolute Minimum: 1 mL whole blood from a lavender EDTA tube

Collect using a Cotton or Dacron swab.
Patient should not have consumed any food or beverages for 30 minutes prior to collection.
The swab should be scraped firmly 6 times against the inside of each cheek.
The swab should be air dried for at least 2 hrs post collection.
Turn Around Time:
1-2 days (Monday through Friday).
Comments:
This test determines the patient's red cell antigen genotype for common blood groups. A pre- or post-transfusion sample can be used. The results are often used in the selection of blood for patients with hemoglobinopathies or multiple antibodies who are likely to receive chronic transfusions.

Testing is performed by Mississippi Valley Regional Blood Center.
Methodology:
Microarray-Based Molecular Genetic Assay
CPT Code:
81479