Home
HelpTest ID KRASW KRAS Somatic Mutation Analysis, Peritoneal Fluid
Necessary Information
1. A pathology report (final or preliminary) is required and must accompany specimen for testing to be performed.
2. The following information must be included in the report provided.
-Patient name and second identifier
-Date of fluid collection
-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.
Useful For
Staging of the pancreatic ductal adenocarcinoma(1)
Disease States
- Colorectal cancer
Special Instructions
Method Name
Droplet Digital Polymerase Chain Reaction (ddPCR)
Reporting Name
KRAS Mutation Analysis, PeritonealSpecimen Type
PeritonealSpecimen Minimum Volume
100 mL of peritoneal washing
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Peritoneal | Refrigerated (preferred) | 10 days |
| Ambient | 5 days |
Reference Values
An interpretive report will be provided.
Day(s) Performed
Monday through Friday
Report Available
5 to 10 daysPerforming 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. It 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
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 |