Genetic test for single nucleotide variant (SNV) detection using a probe-based assay (e.g., for carrier screening or diagnostic purposes)

What This Test Measures

The test detects specific DNA sequences where a single nucleotide (a single letter of the genetic code) may differ from the standard sequence. These differences, called single nucleotide variants (SNVs), can be inherited or acquired and may be linked to certain health risks or conditions. The probe targets a particular region of your DNA to see if it matches the expected sequence or contains an SNV.

Why It Might Be Ordered

Your healthcare provider may recommend this test if you have a family history of genetic conditions, are considering genetic counseling, or if symptoms suggest a genetic basis for your health concerns. It could also be used for carrier screening in families with a history of inherited disorders.

Note: This heading was mistakenly repeated; corrected below.

For this test, a blood sample is typically collected from a vein in your arm. The blood is processed to isolate DNA, which is then analyzed using the probe-based method. The sample is sent to a laboratory for testing and results are usually available within a few days to a week, depending on the lab’s processing time.

Corrected heading: **Sample Collection and Preparation**

A small blood sample is drawn from your arm by a healthcare professional. The DNA is extracted from the blood cells and prepared for analysis. This process ensures the genetic material is ready for the probe-based test to detect any SNVs of interest.