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Synonyms
- Chimerism Testing
- Preëngraftment Monitoring
Test Includes
Genetic markers to determine if the donor and host samples can be distinguished
Special Instructions
To schedule this test, you must telephone 800-533-1037, HLA customer service.
Expected Turnaround Time
6 - 7 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Related Information
Related Documents
For more information, please view the literature below.
Specimen Requirements
Specimen
Whole blood or LabCorp buccal swab kit (buccal swab collection kit contains instructions for use of a buccal swab)
Volume
Adult tube or LabCorp buccal swab kit
Minimum Volume
3 mL or four buccal swabs
Container
Lavender-top (EDTA) tube, yellow-top (ACD) tube, or Labcorp buccal swab kit. When submitting buccal swabs, please telephone 800-533-1037.
Storage Instructions
Maintain whole blood at room temperature. Keep buccal swabs dry and at room temperature.
Causes for Rejection
Hemolysis; clotted specimen
Test Details
Use
Determine if the potential donor and host have genetic differences that can be used to monitor the acceptance of a stem cell transplant
Limitations
Identical (monozygotic) twins will have identical alleles and, therefore, host and donor will not be distinguishable. Note: If determination of twin zygosity (monozygotic versus dizygotic) is needed, telephone 800-533-1037, HLA customer service.
Methodology
DNA analysis by polymerase chain reaction (PCR) of short tandem repeats (STR)
LOINC® Map
| Order Code | Order Code Name | Order Loinc | Result Code | Result Code Name | UofM | Result LOINC |
|---|---|---|---|---|---|---|
| 168138 | Pre Tp Engraft | 48008-8 | 168138 | Pre Tp Engraft | 48008-8 |
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The LOINC® codes are copyright © 1994-2021, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. Permission is granted in perpetuity, without payment of license fees or royalties, to use, copy, or distribute the LOINC® codes for any commercial or non-commercial purpose, subject to the terms under the license agreement found at https://loinc.org/license/. Additional information regarding LOINC® codes can be found at LOINC.org, including the LOINC Manual, which can be downloaded at LOINC.org/downloads/files/LOINCManual.pdf