Back to Test DirectoryJ761 : MSI: if MSI-H reflex to BRAF, if BRAF neg. reflex to MLH1
INFORMATION:
Alternate Name:
MSI(H)>BRAF(neg)>MLH1
Methodology:
Polymerase Chain Reaction
Clinical Utility:
MSI by PCR is useful to detect deficiencies in mismatch repair genes. Stage II colorectal cancer patients with Microsatellite unstable tumors typically do not respond favorably to chemotherapy. An alternative test is MSI by IHC.
ORDERING:
Test Code:
J761-8
Turnaround Time:
10 DAYS
Preferred Specimen:
Formalin-fixed, Paraffin-embedded Tissue
Collection:
| Container | Qty | Temp | Stability |
|---|---|---|---|
| Formalin-fixed, Paraffin-embedded Tissue | 1 | Room Temp | 999 DAYS |
Collection Instructions:
BLK: This comes in block form from client with surgical number imprint.
Alternative Specimen:
Shavings, Unstained Slide
Billing:
CPT Codes:
81301 x 1
CPT Code Disclaimer
CPT codes provided are for informational purposes only. Accuracy of CPT presented should be validated prior to consideration for billing.
CPT coding is the sole responsibility of the billing party. Please direct any questions regarding CPT coding to the payer being billed.
