Test Catalog

Test ID: KRASD    
Cell-Free DNA KRAS 12, 13, 61,146, Blood

Specimen Type Describes the specimen type validated for testing

Whole blood

Ordering Guidance

This test is not a prenatal screening test. To evaluate for the presence of common fetal chromosome abnormalities using cell-free DNA, order NIPS / Cell-Free DNA Prenatal Screen.

Shipping Instructions

1. Samples should be transported at ambient temperature or refrigerated (4 degrees C).

2. Samples are viable for 7 days in the Streck Black/Tan Top Tube Kit (T715).

Specimen Required Defines the optimal specimen required to perform the test and the preferred volume to complete testing

Supplies: Streck Black/Tan Top Tube Kit (T715)

Container/Tube: Streck Cell-Free DNA blood collection kit (T715)

Specimen Volume: Two 10-mL Streck Cell-Free DNA blood collection tubes

Additional Information: Only blood collected in Streck Cell-Free DNA BCT tubes will be accepted for analysis. Whole blood will be processed to produce platelet-poor plasma before cfDNA isolation.


If not ordering electronically, complete, print, and send an Oncology Test Request (T729) with the specimen.

Specimen Minimum Volume Defines the amount of sample necessary to provide a clinically relevant result as determined by the Testing Laboratory

One 10 mL Streck tube

Reject Due To Identifies specimen types and conditions that may cause the specimen to be rejected

No specimen collected in the Streck Cell-Free DNA blood collection tubes will be rejected.

Specimen Stability Information Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included

Specimen TypeTemperatureTimeSpecial Container
Whole bloodAmbient (preferred)7 daysStreck Black/Tan top
 Refrigerated 7 daysStreck Black/Tan top