Test Details
Mnemonic
KRASA
Ordering Code
3423900
CPT-4 Code(s)
81275, 81276
Specimen Information
Collect
Paraffin embedded formalin fixed tissue block
Specimen Preparation
Send a paraffin embedded, formalin fixed tissue block. Protect paraffin block from excessive heat and include surgical pathology report.
Alternate Specimen
Whole blood: 5.0 mL lavender EDTA (3.0 mL minimum)
Bone marrow: 3.0 mL lavender EDTA (1.0 mL minimum)
8 (4 minimum) unstained, charged (+) slides
Bone marrow: 3.0 mL lavender EDTA (1.0 mL minimum)
8 (4 minimum) unstained, charged (+) slides
Transport Temperature
Room temperature
Rejection Criteria
No tumor in tissue, gross hemolysis, clotted samples
Stability
Tissue block:
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Whole blood and Bone marrow:
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable
Slides:
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Whole blood and Bone marrow:
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable
Slides:
Room temperature: 5 years
Refrigerated: 5 years
Frozen: Unacceptable
Methodology
Polymerase Chain Reaction/sequencing
Reference Range
See report
Performing Laboratory
Quest
New York DOH Approval Status
Yes