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Test ID PIK3B Cell-Free DNA PIK3CA Test, Blood


Shipping Instructions


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

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



Specimen Required


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

Specimen Volume: Two, 10-mL Streck cell-free DNA (cfDNA) blood collection tubes

Additional Information:

1. Only blood collected in Streck cfDNA tubes will be accepted for analysis.

2. Whole blood will be processed to produce platelet-poor plasma before cfDNA isolation.


Reporting Name

cfDNA PIK3CA Test, Blood

Specimen Type

Whole blood

Specimen Stability Information

Specimen Type Temperature Time Special Container
Whole blood Ambient (preferred) 7 days Streck Black/Tan top
  Refrigerated  7 days Streck Black/Tan top

Report Available

5 to 10 days

Performing Laboratory

Mayo Clinic Laboratories in Rochester

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PIK3B cfDNA PIK3CA Test, Blood 60034-6

 

Result ID Test Result Name Result LOINC Value
616647 Result Summary 50397-9
616648 Result 82939-0
616649 Interpretation 69047-9
616650 Additional Info 48767-8
616651 Specimen 31208-2
616652 Source 31208-2
616653 Released By 18771-6

Forms

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

Useful For

Identification of hormone receptor positive and human epidermal growth factor receptor 2 negative (HR+/HER2-) advanced breast cancer tumors that may be eligible for treatment with targeted kinase inhibitor therapy (eg, alpelisib).

Day(s) Performed

Monday through Friday

Test Classification

This test has been modified from the manufacturer's instructions. Its performance characteristics were 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

81309

Specimen Minimum Volume

One 10 mL Streck cell-free DNA tube

Reference Values

An interpretive report will be provided

Method Name

Polymerase Chain Reaction (PCR)