Microsatellite Instability Testing in Cancer Tissue (MSI)

Test ID		LAB14512 Laboratory order only. Please call Molecular Genetics Laboratory at 984-974-1825 with questions regarding this test.
CPT Code(s)		81301, G0452
Laboratory		UNCH Molecular Genetics Laboratory
Specimen	Routine:	Formalin fixed paraffin embedded tissue. 4-6 micron sections on glass microscope slides; minimum 10 slides(unstained) and 1 stained slide(H&E stain); See Comments for additional specimen information
Availability	Routine:	Weekly, No weekends or Holidays
Turnaround Time	Routine:	14 days from receipt date of slides

Comments	Additional information: Normal and tumor tissue required for testing. If normal tissue is not available, blood (3mL lavender EDTA tube or yellow ACD-A tube) can be tested. Microsatellite Instability Testing in Cancer Tissue (MSI) Molecular test request form Directions for collecting and mailing of specimens

Reviewed by J. Carr on November 20, 2025

UNC Hospitals
McLendon Clinical Laboratories
101 Manning Drive
Chapel Hill, NC 27514