Test Overview
Test Methodology

Droplet Digital Polymerase Chain Reaction

Test Usage

Designed to measure MRD in patients with BRAF V600E driven histiolytic and other neoplasms.

Reference Range *

Qualitative: Positive/Suspicious/Negative

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Monday - Friday
Analytic Time

4 - 7 days

Soft Order Code
CHTRK, CHTKM
MiChart Code
CHTRK, CHTKM
Synonyms
  • CHTRK
Laboratory
Sendout
Reference Laboratory
Cincinnati Children's Hospital Molecular and Genomic Pathology Service LAB00421
Section
Special Testing
Specimen Requirements
Collection

Draw EDTA tubes Mon-Thurs only until 4pm. If collecting off site, send with a stat driver no later than 3 pm.
Cinci Children's does NOT accept Saturday delivery

Collection Instructions

Collect specimen in a EDTA purple top tube. Send entire sample to Specimen Processing refrigerated. Draw Monday-Thurs only, before 4pm. If collecting off site, send with a stat driver no later than 3 pm.
(Streck tube can be used for either specimen type, which extends stability- keep at room temp)

Special Handling

If using an EDTA tube to collect, it must be received by Cinci <24 hours. Draw Monday-Thurs only, before 4pm. If collecting off site, send with a stat driver no later than 3 pm.

Alternate Specimen

FFPE: 1 H&E slide and 6 unstained slides cut at 5 microns thick. Or the entire block, if slides are not available.

Normal Volume

5 mL whole blood or bone marrow

Minimum Volume

3 mL whole blood or bone marrow

Storage Temperature
Refrigerated for blood and bone marrow
Ambient for blocks, slides or blood/bone marrow in a Streck tube
Rejection Criteria
Frozen samples, sample collected in heparin, decalcified samples; blood or bone marrow in EDTA >24 hours old upon receipt in Cinci
Additional Information

Test performed by Cincinnati Children's Hospital,

Billing
CPT Code
81210
NY State Approved
No