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MSI
TEST DIRECTORY
Test Name
MSI
Preauthorization
Third party preauthorization required. Click
here
for details.
Alternate Names
Microsatellite Instability, Mismatch Repair
Description
Detection of microsatellite instability using 5 mononucleotide STR markers.
Test Code
774
SPECIMEN REQUIREMENTS
Specimen
FFPE tissue
Storage Requirements
Store specimens at room temperature (15 to 30°C) until transported. DO NOT freeze.
Causes for Rejections
Tissues with insufficient tumor content may be rejected.
Click here for
Specimen Rejection Criteria.
GENERAL AND TECHNICAL INFORMATION
Turn Around Time
7 days
Methodology
PCR amplification of 5 mononucleotide STR markers followed by capillary electrophoresis. Patterns from normal and tumor specimens are compared.
CPT Code
81301, 88381