Understanding Your Medical Test: What It Is, How It Is Done, and Why You May Need It
This test detects a specific genetic change (g.94645745G>A) at the 10q23 chromosome location using molecular genetics methods.
{"A genetic test that looks for a specific change (G>A) at position 94645745 on chromosome 10","Performed on a blood or tissue sample","Helps identify genetic variants that may be related to certain hereditary conditions","Results should be interpreted by a healthcare provider or genetic counselor","This is a genotype test that tells whether you have this specific genetic variant"}
Key facts at a glance
- LOINC
- 93198-0
- Short code
- 10Q23-GA
- Synonyms
- 10q23 g.94645745G>A Geno Bld/T
- Category
- chemistry
- Sample
- whole-blood
- Container
- EDTA (purple top) tube
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- ≥ 0 years
- Method
- molgen
- CPT
- 81401
- SNOMED
- 1141004
- Specimen volume
- 2-5 mL whole blood
- Stability
- Room temperature: 24 hours; Refrigerated (2-8°C): 7 days; Frozen (-20°C or below): 30 days
- Hemolysis max
- 50
- TAT
- 72–336 hours
- Order
- routine
What is this test? This test is a diagnostic procedure in which a sample of blood, urine, or other body material is collected and examined in a laboratory so your doctor can learn how your body is working and check for signs of illness.
This is a molecular genetics test that looks for a specific genetic variant at location 10q23 (position g.94645745) on chromosome 10. The test determines whether the nucleotide Guanine (G) has changed to Adenine (A) at this specific position. This type of test is called a genotype test because it identifies which version (alleles) of this genetic sequence you have.
How is the test performed? A trained member of your health care team will collect the needed sample, usually by drawing a small amount of blood from a vein in your arm or asking you to provide a urine specimen, and the sample is then sent to a laboratory for analysis; the procedure is quick and causes only brief, mild discomfort.
A healthcare professional will collect a sample of your blood or tissue. The sample is then sent to a laboratory where molecular genetics techniques are used to analyze your DNA and identify the genetic variant at the specified location.
Why might I need this test? Your doctor may order this test to confirm or rule out a medical condition, monitor an illness you already have, see how well a treatment is working, or check your overall health as part of a routine exam, and the results help guide decisions about your ongoing care.
Your doctor may order this test for various reasons, including: evaluating hereditary conditions, confirming a suspected genetic disorder, family history assessment, or guiding treatment decisions. The 10q23 region contains genes that are important for cell growth regulation and tumor suppression.
Reference range
Wild-type (normal) genotype at 10q23 g.94645745 positionN/A
No special preparation required. Collect whole blood in EDTA tube. Avoid hemolysis. Inform laboratory of any recent blood transfusions as this may affect results.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
The significance of finding this specific genetic variant depends on which gene is affected at the 10q23 g.94645745 location. Certain variants in this chromosomal region may be associated with hereditary cancer syndromes or other genetic conditions. A positive result does not necessarily mean you have a disease—it indicates the presence of a specific genetic variant that should be interpreted in the context of your family history and clinical symptoms by a qualified healthcare professional.
Frequently asked questions
What does a positive result mean?
Will this test tell me if I have cancer?
Do I need to fast before this test?
How long does it take to get results?
Should my family members be tested?
Sources
- 1
- 2
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
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 15, 2026. · Read our editorial policy