Genetic test for detection of specific DNA sequences in plasma (qualitative probe-based assay)

What This Test Measures

The test analyzes a sample of your plasma to detect the presence of specific DNA sequences. These sequences may be associated with inherited conditions, cancer research, or other genetic studies. The method used involves a specialized probe to identify these sequences qualitatively, meaning it tells you whether the sequences are present or not, but not their exact quantity.

Why It Might Be Ordered

Your healthcare provider may order this test if you have a family history of certain genetic conditions, if you are participating in a clinical trial, or if research suggests your DNA could be relevant to a study. It’s also sometimes used in screening or research contexts to detect rare genetic markers.

Sample Collection and Preparation

A blood sample is drawn from your vein, and the plasma portion is separated for testing. The plasma is then processed and sent to a lab for analysis using the probe-based method. You may need to fast or avoid certain activities for a few hours before the test, depending on the specific instructions from your provider.

What to Expect After the Test

Results are typically qualitative, meaning you will receive a positive or negative result for the presence of the specific DNA sequences. Follow-up discussions with your healthcare provider will help interpret the results in the context of your health or research participation.