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Genetic analysis of DNA using a probe for specific nucleotide sequences (qualitative)

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

This test checks for specific genetic variations in your DNA using a molecular probe. It helps identify whether certain genes are present or altered in a way that may influence health risks or conditions.

Quick summary

["This test can help determine if you carry genetic markers linked to inherited conditions or risks."]

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

Key facts at a glance

LOINC
63429-5
Short code
uidA gene Spec Ql NAA+probe
Synonyms
uidA gene Spec Ql NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

What This Test Measures

The test detects specific DNA sequences using a labeled probe. The probe binds to matching genetic material, allowing for qualitative confirmation of presence or absence of those sequences. This is often used in genetic screening, carrier testing, or research contexts.

How the Sample is Collected

A blood sample is typically taken from a vein in your arm. The DNA is extracted from your white blood cells and prepared for analysis. No special preparation is needed, but fasting may not be required unless specified by your healthcare provider.

When This Test Might Be Ordered

Your healthcare provider may recommend this test if you have a family history of genetic disorders, if you’re considering genetic counseling, or if symptoms suggest a genetic condition. It can also be used for prenatal screening, carrier testing for inherited disorders, or research purposes.

What to Expect Before the Test

There are usually no specific preparations needed. You may experience mild discomfort from the needle, but most people tolerate the procedure well. If you’re pregnant or have a bleeding disorder, let your provider know before the test.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

Why might my doctor order this test?
Your doctor may order this test if you have a family history of genetic conditions, are considering genetic testing for yourself or a family member, or if symptoms suggest a genetic cause for your health concerns. It can also be used for prenatal screening or research studies.
How long will it take to get my results?
Results from this test can vary widely depending on the complexity of the genetic analysis. Simple screening tests may return results within days to a few weeks, while comprehensive genetic testing can take several weeks to months. Your healthcare provider will discuss timelines with you during your appointment.
What if my test results are positive for a genetic variation?
If your results indicate a genetic variation, your healthcare provider will work with you to interpret the significance of those findings. This may involve genetic counseling to discuss risks, potential treatments, or next steps for you or your family. Follow-up testing or additional genetic analysis may be recommended based on the results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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