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Engraftment Monitoring, Post
Test Code168120
CPT Codes
81267
Includes
"Polymorphic genetic markers (loci) to distinguish host versus donor cells
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Preferred Specimen
"Whole blood, marrow cells, fractionated cells, or extracted DNA
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Minimum Volume
"3 mL
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Instructions
"To schedule this test, you must telephone 800-533-1037, HLA customer service.
Maintain whole blood at room temperature.
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Maintain whole blood at room temperature.
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Transport Container
"Lavender-top (EDTA) tube or yellow-top (ACD) tube (solution A or B is acceptable)
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Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
"Hemolysis; clotted specimen
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Methodology
"DNA analysis by polymerase chain reaction (PCR) of short tandem repeats (STR) "
Limitations
"Identical twins will have identical alleles and, therefore, host and donor will not be distinguishable. The presence of small amounts of host cells (<5%) may be below the sensitivity of the test and, thus, be interpreted as no host cells present, when in fact, a low level is present.
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