Test Details
Mnemonic
TMSI
Ordering Code
3800241
CPT-4 Code(s)
81301, 88381
Specimen Information
Patient Preparation
Pathology report must accompany specimen in order for testing to be performed.
Collect
Tumor tissue and normal tissue
Specimen Preparation
Send tumor tissue block. Approximately 0.6 x 0.6 cm area of tumor is required. Submit FFPE tissue block with corresponding hematoxylin and reosin (H and E) slides (preferred) or 1 slide stained with H and E and 5 unstained, nonbaked slides (5-micrometer thick sections) of the tumor tissue.
Alternate Specimen
Formalin-fixed, paraffin-embedded (FFPE) prepared cell block or unstained slides.
Minimum Volume
1 cm tissue
Transport Temperature
Room temperature
Rejection Criteria
Decalcified specimens, Low tumor percentage, insufficient amount of tumor nonformalin fixed, fresh tissue Cytology smears
Stability
Room temperature: Preferred
Refrigerated: Unacceptable
Frozen: Unacceptable
Refrigerated: Unacceptable
Frozen: Unacceptable
Methodology
Polymerase Chain Reaction (PCR)
Reference Range
See report
Performing Laboratory
MAYO
New York DOH Approval Status
Yes