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HelpTest Code SPAGR Special Red Cell Antigen Typing, Whole Blood
Reporting Name
Special Red Cell Ag TypingPerforming Laboratory
Mayo Clinic Laboratories in Rochester
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
Method Name
Hemagglutination
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.
Specimen Type
Whole Blood EDTASpecimen 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 |
Reference Values
Reported as positive or negative
Day(s) Performed
Monday through Friday, Sunday
Report Available
1 to 5 daysTest 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 |
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