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

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

Methodology

Polymerase Chain Reaction/sequencing
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Reference Range

See report
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Performing Laboratory

Quest SJC
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