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Amlmds7q31delbldt

Published: August 9, 2026Updated: August 16, 2026

A molecular genetics test that detects deletion of the 7q31 region in blood or tissue cells, used to help diagnose and guide treatment for acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).

Quick summary

{"This test looks for a specific chromosomal deletion (7q31) in blood or tissue cells","It helps doctors diagnose and classify AML and MDS blood disorders","Results guide treatment decisions and prognosis assessment","The test uses molecular genetics methods to analyze DNA","Results are reported as present or absent (nominal)"}

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
42712-0
Short code
AML/MDS 7q31 Del Bld/T
Synonyms
AML/MDS 7q31 Del Bld/T
Category
chemistry
Sample
whole-blood
Container
Lavender-top (EDTA)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
molgen
Specimen volume
3 mL
Stability
Room temperature: 4h, Refrigerated: 24h
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What is this test?

The 7q31 deletion test is a specialized molecular genetics test that detects whether part of chromosome 7 (specifically the q31 region) is missing in cells from your blood or tissue sample. This chromosomal abnormality is associated with certain blood cancers, particularly acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS).

Why do I need this test?

Your doctor may order this test if you have symptoms or signs of a blood disorder such as AML or MDS. The test helps confirm the diagnosis, determine the specific type of disease, and guide treatment decisions. It also provides important information about your prognosis (outlook).

How is the test performed?

A blood sample is taken from a vein in your arm, or in some cases, a tissue sample may be collected. The sample is sent to a laboratory where molecular genetics techniques are used to detect whether the 7q31 region is missing from the chromosomes in the cells. The test does not measure anything numerically; results are reported as either 'detected' (abnormal) or 'not detected' (normal).

What do the results mean?

If the 7q31 deletion is detected, it may indicate the presence of AML, MDS, or other related blood disorders. This information helps your healthcare team understand the specific characteristics of your disease and tailor appropriate treatment. If the deletion is not detected, it suggests a different type or subtype of the condition, which may require different treatment approaches.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Is this test painful?
The test involves drawing a blood sample, which may cause brief discomfort or a pinching sensation. The procedure is generally well-tolerated and takes only a few minutes.
How long does it take to get results?
Molecular genetics tests typically take longer than routine blood tests. Results are usually available within several days to a few weeks, depending on the laboratory.
Do I need to fast before this test?
No special preparation, including fasting, is typically required for this test. Follow any specific instructions provided by your healthcare provider.
Can this test determine my treatment plan?
While the test provides important information that guides treatment decisions, your complete treatment plan will be based on multiple factors including your overall health, disease stage, and other test results.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy