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Beaumont Laboratory

Kit Mutation (Exon 8,17) for AML

Kit Mutation (Exon 8,17) for AML, U of M: KTAML, EPIC: LAB7102, SOFT: XCKAG

Specimen Collection Criteria

Collect (preferred specimen): Blood or bone marrow in one Lavender-top EDTA tube. (Min: 0.5 mL)

Invert several times to mix blood or bone marrow.

Physician Office/Drawsite Specimen Preparation

Do not centrifuge. Maintain specimen in original collection tube, room temperature (20-26°C or 68-78.8°F) prior to transport.

Preparation for Courier Transport

Transport: 5.0 mL Blood or 3.0 mL bone marrow, room temperature (20-26°C or 68-78.8°F) in original collection tube. (Min: 0.5 mL)

Rejection Criteria

  • Specimens that are clotted or grossly hemolyzed.
  • Specimens not collected and processed as indicated.


Specimen Stability for Testing:

Room temperature (20-26°C or 68-78.8°F): 48 hours
Refrigerated (2-8°C or 36-46°F): 48 hours
Frozen (-20°C/-4°F or below): Unacceptable

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Sendout Laboratory with any questions.


Sent to MLabs Ann Arbor, MI.


Monday - Friday.
Results available in 5-8 days.

Reference Range

By report.

Test Methodology

Allel-Specific Polymerase Chain Reaction (PCR) with capillary electrophoresis detection.

Clinical Utility

KIT gene mutations occur in approximately 25% of cases of acute myeloid leukemia (AML) with t(8;21) or inv(16), also referred to as core-binding factor AML. These mutations are predominately small length affecting mutations in KIT exon 8 and substitution mutations in KIT exon 17. KIT mutations in core-binding factor AML may be an adverse prognostic factor in this otherwise favorable-risk disease. This DNA sequencing test detects mutations in exons 8 and 17 of the KIT gene in blood and bone marrow specimens. This test will detect mutations in specimens when at least 30% of the nucleated cells carry the mutation.

CPT Code


Test Codes


Last Updated


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This directory currently reflects information only for specimens collected and/or processed at the Farmington Hills, Grosse Pointe, Royal Oak, and Troy campuses.