Sign in →

Test Code SPAGR Special Red Cell Antigen Typing, Whole Blood

Reporting Name

Special Red Cell Ag Typing

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Additional proof of alloantibody specificity


This test is not useful for the purpose of establishing paternity


Determining possible antibody specificities in complex cases

Method Name


Shipping Instructions

Specimen must arrive within 7 days of draw.

Necessary Information

The desired antigens to be tested must be included or testing will not proceed.

Specimen Required

Container/Tube: 6 mL pink (EDTA)

Submission Container/Tube: Original tube

Collection Instructions: Send specimen in original tube.

Specimen Type

Whole Blood EDTA

Specimen Minimum Volume

Pediatric: 3 mL blood in 6 mL (pink) EDTA tube

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole Blood EDTA Refrigerated (preferred) 7 days
  Ambient  72 hours

Reject Due To

Gross hemolysis OK

Reference Values

Reported as positive or negative

Day(s) and Time(s) Performed

Monday through Friday, Sunday; Continuously

Test Classification

This test has been cleared, approved or is exempt by the U.S. Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

86905-Each red cell antigen typing (if more than one ordered)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
SPAGR Special Red Cell Ag Typing 906-8


Result ID Test Result Name Result LOINC Value
AGTR Red Cell Antigen Typing 906-8
ATBTR Antigen(s) to be tested? 33062-1

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
STTX32 Red Cell Antigen Typing No No

Testing Algorithm

List the specific antigens desired on the order. Examples of antigens routinely tested by the lab are listed below.


c (little c)


e (little e)









s (little s)

Complete phenotype

(13 antigens listed above)

McLeod (K system antigens)