Sign in →

Test Code SPAGR Special Red Cell Antigen Typing, Whole Blood


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:

Preferred: Pink top (EDTA)

Acceptable: Lavender top (EDTA)

Specimen Volume: 6 mL

Pediatric Volume: 3 mL blood in pink-top or lavender-top (EDTA) tube

Collection Instructions: Send whole blood specimen in original tube. Do not aliquot.


Useful For

Additional proof of alloantibody specificity

 

Determining possible antibody specificities in complex cases

 

This test is not useful for the purpose of establishing paternity

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
STTX32 Red Cell Antigen Typing No No
DATR Direct Antiglobulin Tst (Poly) No No

Testing Algorithm

List the specific antigens desired on the order.

Note: Antigen typings that require the use of an anti-human globulin reagent (eg, Fya, Fyb, s) will include the addition of a direct antiglobulin test, which will be performed at an additional charge.

Examples of antigens routinely tested by the lab are listed below.

-Fya/Fyb

-C

-c (little c)

-E

-e (little e)

-K

-Fya

-Fyb

-Jka

-Jkb

-M

-N

-S

-s (little s)

-Complete phenotype (13 antigens listed above)

-McLeod (K system antigens)

-Other

Method Name

Hemagglutination

Reporting Name

Special Red Cell Ag Typing

Specimen Type

Whole Blood EDTA

Specimen Minimum Volume

See Specimen Required

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

Clinical Information

The presence or absence of a cellular antigen is an inherited trait. As a general rule, individuals will not make antibody directed against an antigen present on their own red blood cells.

Reference Values

Reported as positive or negative

Method Description

Hemagglutination; technique will vary according to reagent antisera source and specificity.(Fung MK, Eder AF, Spitalnik SL, Westhoff CM, eds: Technical Manual. 19th ed. AABB; 2017)

Day(s) Performed

Monday through Friday, Sunday

Report Available

1 to 5 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test has been cleared, approved, or is exempt by the US 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