CBFB/MYH11 inv(16), Quantitative, Real-Time PCR

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

CPT Codes

Preferred Specimen
5 mL whole blood or 3 mL bone marrow collected in an EDTA (lavender-top) tube

Minimum Volume
2 mL whole blood • 1 mL bone marrow • 20 uL of 10 ng/uL extracted RNA

Other Acceptable Specimens
Whole blood or bone marrow collected in: EDTA (royal blue-top) tube, or lithium heparin or sodium heparin (green-top) tube • 50 uL of 10 ng/uL extracted RNA submitted in a microcentrifuge tube


Do not reject specimens, send to laboratory for screening.

Collect 5 mL of whole blood or 3 mL bone marrow in an EDTA (lavender-top) tube. Whole blood or bone marrow is shipped at room temperature or refrigerated (cold packs). Do not freeze whole blood or bone marrow.
After collection of the sample, draw date and time, as well as sample type, must be written on the tube and included as requested information.
If the stability of the sample cannot be determined, delay in result or cancelation of test may occur. Clotted specimens are unacceptable.

Only accept extracted RNA when extraction or isolation is performed in an appropriately qualified laboratory such as a CLIA-certified laboratory or a laboratory meeting equivalent requirements as determined by the CAP and/ or CMS.

Transport Temperature
Whole blood or bone marrow: Room temperature
Extracted RNA: Refrigerated (cold packs)

Specimen Stability
Whole blood and bone marrow
Room temperature: 5 days
Refrigerated: 5 days
Frozen: Unacceptable

Extracted RNA
Room temperature: Unacceptable
Refrigerated: Preferred
Frozen: Acceptable

Real-Time Reverse Transcriptase Polymerase Chain Reaction (RT-PCR)

FDA Status
This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Setup Schedule
Set up: Tues; Report available: 6 days

Reference Range

Clinical Significance

This Real-Time Quantitative (Reverse Transcription Polymerase Chain Reaction) for the amplification of CBFB/MYH11 fusion transcript can be used to detect the chromosome aberration of inv (16) or t (16;16). It can be used to detect Minimal Residual Disease (MRD) and assess the risk for disease relapse in inv (16) or t (16;16) Acute Myeloid Leukemia (AML).

Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

Last Updated: November 29, 2021

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.