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HelpOrder Code IN16Q CBFB::MYH11 Inversion(16), Quantitative Detection and Minimal Disease Risk Monitoring, qRT-PCR, Varies
Shipping Instructions
1. Refrigerated specimens must arrive within 5 days of collection, and ambient specimens must arrive within 3 days of collection.
2. Collect and package specimen as close to shipping time as possible.
Necessary Information
The following information is required:
1. Pertinent clinical history
2. Date of collection
3. Specimen source (blood or bone marrow)
Specimen Required
Submit only 1 of the following specimens:
Specimen Type: Blood
Container/Tube: Lavender top (EDTA) or yellow top (ACD-B)
Specimen Volume: 10 mL
Collection Instructions:
1. Invert several times to mix blood.
2. Send whole blood specimen in original tube. Do not aliquot.
3. Label specimen as blood.
Specimen Type: Bone marrow
Container/Tube: Lavender top (EDTA) or yellow top (ACD-B)
Specimen Volume: 4 mL
Collection Instructions:
1. Invert several times to mix bone marrow.
2. Send bone marrow specimen in original tube. Do not aliquot.
3. Label specimen as bone marrow.
Forms
1. Hematopathology Patient Information (T676)
2. If not ordering electronically, complete, print, and send an Hematopathology/Cytogenetics Test Request (T726) with the specimen.
Useful For
Detection of CBFB::MYH11 gene fusion in patients recently diagnosed with acute myeloid leukemia (AML)
Minimal residual disease monitoring during the clinical and therapeutic course of patients with AML
Method Name
Quantitative Real-Time Reverse Transcription Polymerase Chain Reaction (qRT-PCR)
Reporting Name
Inv(16); CBFB-MYH11, Quant, VSpecimen Type
VariesSpecimen Minimum Volume
Blood: 8 mL; Bone marrow: 2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Varies | Refrigerated (preferred) | 5 days |
| Ambient | 72 hours |
Reject Due To
| Gross hemolysis | Reject |
| Bone marrow core biopsies Paraffin-embedded bone marrow clots Slides Paraffin shavings Moderately to severely clotted |
Reject |
Reference Values
An interpretive report will be provided.
Method Description
Total RNA is extracted from blood or bone marrow and reverse transcribed to generate complementary DNA. Quantitative real-time reverse transcription polymerase chain reaction is performed using the LightCycler instrument platform, and the data analyzed using the dedicated software for relative quantification with calibrator normalization. Results are provided as a normalized relative value of CBFB::MYH11::ABL1 messenger RNA transcripts with a reproducible analytical sensitivity of 0.01%.(Unpublished Mayo method)
The normalized ratio is a relative quantification calculation as follows:
|
Normalized ratio= |
CBFB::MYH11 (sample)/ABL1 (sample) |
|
CBFB::MYH11 (run calibrator)/ABL1 (run calibrator) |
Day(s) Performed
Monday through Saturday
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
81401-CBFB-MYH11