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Genetic test for detection of specific DNA sequence variants using a probe (e.g., for hereditary conditions like Lynch syndrome or other genetic predispositions)

Published: August 9, 2026Updated: August 17, 2026

This test checks for specific DNA changes (mutations) that may increase your risk of certain cancers or other hereditary conditions.

Quick summary

["Identifies inherited genetic risks that may influence long-term health risks."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 17, 2026Editorial policy

Key facts at a glance

LOINC
101556-9
Short code
C krusei DNA Ur Ql NAA+probe
Synonyms
C krusei DNA Ur Ql NAA+probe
Category
chemistry
Sample
urine
Container
Sterile urine container
Units
N/A
Ref low
22
Ref high
198
Critical range
— – 10000 N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
CPT
82553
Specimen volume
10 mL
Stability
Room temperature: 2h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
0
Lipemia max
0
Icterus max
0
TAT
4–24 hours
Order
routine

What This Test Measures

The test analyzes a sample of your DNA to detect particular genetic sequences (variants) that are linked to inherited conditions. These variants may be passed down through families and can influence disease risk, such as certain cancers or metabolic disorders.

How the Test Works

A specialized probe is used to identify specific DNA segments that match known variants. This is often done through advanced laboratory techniques like polymerase chain reaction (PCR) or next-generation sequencing to precisely locate these changes.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have a family history of certain cancers, genetic syndromes, or if you are at higher risk due to ethnicity or personal health history. It can also be used for preconception counseling or genetic counseling.

Sample Collection

You will provide a blood sample, saliva sample, or sometimes a buccal swab (inside cheek) to collect DNA. The lab processes this sample to extract and analyze the genetic material.

Reference range

Adult males: 22-198 U/L; Females: 22-198 U/LN/A

Specimen: urine

No special preparation required. Inform provider of any chest pain or symptoms.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test helps identify inherited genetic mutations that may increase susceptibility to specific diseases. Knowing your genetic profile can inform personalized healthcare decisions, such as monitoring, preventive measures, or risk-reducing strategies. It is particularly useful in guiding family planning and counseling for hereditary conditions.

Short name

Hereditary DNA Variant Probe Test

Frequently asked questions

What does a positive result mean?
A positive result indicates the presence of the specific genetic variant detected by the probe. This may mean you carry a higher risk for certain conditions, but it does not confirm a diagnosis. Your healthcare provider will discuss the implications with you based on clinical context and family history.
How long will results take?
Results typically take 2 to 4 weeks or longer, depending on the complexity of the test and laboratory processing times. Your healthcare provider will contact you once results are available.
Are there any risks or side effects from this test?
There are generally no risks or side effects from providing a blood, saliva, or swab sample. However, like any medical test, there is a very small chance of discomfort or minor irritation at the sample collection site.
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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 17, 2026. · Read our editorial policy