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Test ID KRASW KRAS Somatic Mutation Analysis, Peritoneal Fluid

Shipping Instructions

Send specimens refrigerated (4° C)

Necessary Information

Pathology report (final or preliminary) is required and must accompany specimen for testing to be performed. At minimum, it should contain the following information:

1. Patient name and second identifier

2. Fluid collection date

3. Source of the fluid

Specimen Required

Container/Tube: 50-mL Falcon tube

Preferred: Fresh, peritoneal washing; no fixatives added to wash

Specimen Volume: Two 50-mL Falcon tubes

Collection Instructions: Containers must be labeled with two unique patient identifiers.


Molecular Genetics: Inherited Cancer Syndromes Patient Information (T519)

Useful For

Staging of the pancreatic ductal adenocarcinoma.(1)

Method Name

Droplet Digital Polymerase Chain Reaction (ddPCR)

Reporting Name

KRAS Mutation Analysis, Peritoneal

Specimen Type


Specimen Minimum Volume

100 mL of peritoneal washing

Specimen Stability Information

Specimen Type Temperature Time Special Container
Varies Refrigerated

Reference Values

An interpretive report will be provided.

Day(s) Performed

Monday through Friday

Report Available

4 to 10 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Test Classification

This test was developed, and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the US Food and Drug Administration.

CPT Code Information

81275-KRAS (v-Ki-ras2 Kirsten rat sarcoma viral oncogene) (eg, carcinoma) gene analysis, variants in codons 12 and 13

81276-KRAS (v-Ki-ras2 Kirsten rat sarcoma viral oncogene) (eg, carcinoma) gene analysis, additional variants

81479 (if appropriate for government payers)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
KRASW KRAS Mutation Analysis, Peritoneal 21702-6


Result ID Test Result Name Result LOINC Value
616453 Result Summary 50397-9
616454 Result 82939-0
616455 Interpretation 69047-9
616456 Specimen 31208-2
616457 Source 31208-2
616459 Released By 18771-6
616460 Method 85069-3
616461 Disclaimer 62364-5
616462 Additional Information 48767-8