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HelpTest ID IDCOR Red Blood Cell Antigen Genotyping, PCR, Blood
Ordering Guidance
This test is used to determine red blood cell genotype and predict the phenotype. It does not determine the A1 phenotype subtype or aid in the diagnosis of McLeod syndrome.
-If testing for McLeod syndrome (phenotype) is desired, order SPAGR / Special Red Cell Antigen Typing, Whole Blood and note "K system antigens" on the order.
-If the A1 subtype is requested, order SPAGR and note "A1 antigen" on the order.
Shipping Instructions
1. Specimen must arrive within 7 days of collection.
2. Collect and package specimen as close to shipping time as possible.
Necessary Information
Pertinent clinical history, including whether the patient has received a bone marrow transplant, is required.
Specimen Required
Container/Tube:
Preferred: Pink top (EDTA)
Acceptable: Lavender top (EDTA)
Specimen Volume: 6 mL
Pediatric Volume: 3 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Label specimen as blood.
3. Send whole blood specimen in the original tube. Do not aliquot.
Useful For
Determining the red blood cell status of any patient but more useful than serology in the following situations:
-Recently transfused patient.
-Patient with a positive direct antiglobulin test.
-Patient with a discrepant antigen typing with antibodies present.
This test is not useful for the purpose of:
-Establishing paternity
-Diagnosing McLeod syndrome or determining the McLeod phenotype
-Determining A1 subtype
Method Name
Molecular Genotyping
Reporting Name
IDCORE XT RBC GenotypeSpecimen Type
Whole Blood EDTASpecimen Minimum Volume
3 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood EDTA | Refrigerated (preferred) | 7 days |
| Ambient | 7 days |
Reference Values
The presence or absence of each red blood cell antigen is identified.
Day(s) Performed
Monday through Friday
Report Available
2 to 7 daysPerforming 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
0084U
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| IDCOR | IDCORE XT RBC Genotype | 93914-0 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 623290 | IDCORE XT RBC Genotype | 906-8 |