Ordering Recommendation

Use to assess recipient genotype and compare to donor genotype prior to allogeneic hematopoietic stem cell transplant. Pretransplant genotyping is required to enable posttransplant chimerism and engraftment monitoring. For posttransplant monitoring, refer to Chimerism, Posttransplant (3005454).

Mnemonic

STR_PRE

Methodology

Polymerase Chain Reaction/Fragment Analysis

Performed

Sun-Sat

Reported

varies

New York DOH Approval Status

This test is New York DOH approved.

Specimen Required

Patient Preparation
Collect

Lavender (EDTA), pink (K2EDTA), or yellow (ACD solution A or B). OR bone marrow in lavender (EDTA). OR buccal brushes from recipient.

Specimen Preparation

Transport 2 mL whole blood (Min: 1 mL) OR 1 mL bone marrow (Min: 1 mL) OR 2 buccal brushes in a sterile, dry tube. (Min: 2 brushes)

Storage/Transport Temperature

Refrigerated. Also acceptable: Ambient.

Unacceptable Conditions
Remarks

Posttransplant results will be compared to pretransplant recipient and donor genotypes, therefore, donor and recipient specimens must be obtained and genotyped before the transplant event occurs. If transplant event occurred prior to specimen collection, dry buccal brushes (not bloody) are acceptable.

Stability

Room temperature: 1 week; Refrigerated: 1 month; Frozen: Unacceptable

Reference Interval

Interpretive Data

Background Information: Chimerism, Recipient Pretransplant
Indication:
Monitoring for bone marrow transplant patients; correlation with clinical status and consideration of the interval between bone marrow transplantation and testing is necessary for proper interpretation of results.
Methodology:
PCR followed by capillary electrophoresis. Specimens are analyzed using 15 autosomal markers (D8S1179, D21S11, D7S820, CSF1PO, D3S1358, THO1, D13S317, D16S539, D2S1338, D19S433, vWa, TPOX, D18S51, D5S818 and FGA) and one gender marker (amelogenin).
Limitations:
Diagnostic errors can occur due to rare sequence variations.

This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.

Compliance Category

Note

Hotline History

N/A

CPT Codes

81265

Components

Component Test Code* Component Chart Name LOINC
3005450 Chimerism Recipient Pre, Specimen
3005451 Chimerism Recipient Pre,InformativeLoci
3005452 Chimerism Recipient Pre, Interpretation
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

  • Bone marrow DNA typing
  • Chimerism evaluation
  • Pre transplant evaluation
  • Transplant analysis
  • Transplant evaluation
Chimerism, Recipient, Pretransplant