Sanger Sequencing Single Variant Test

 Sanger Sequencing Single Variant Test Overview

The Sanger sequencing single variant test is a specialised test that helps validate a specific range of genes. Medical experts consider this test the most accurate method for detecting genetic mutations associated with inherited disorders, cancers, and other health issues. The focus is on checking a certain DNA region where a mutation was identified earlier. With this device, health care experts can check if the specific variant is inherited or missing by just looking at the target nucleotide sequence.

With this Sanger Sequencing test, the healthcare expert can personalize the medication and diagnose issues faced by the patient. Moreover, the doctor can also assess potential disease risk and offer the right counselling.

When is the Sanger Sequencing Single Variant Test Prescribed?

Doctors may recommend this Sanger Sequencing Test for different reasons. It completely depends on the disease and health condition. Some of these are-

For Genetic Disorder

Sanger sequencing for a single variant test is prescribed when the individual is suspected of having a genetic disorder or has a family history.

To Monitor and Treat Disease

For individuals who are already diagnosed with a certain health condition, the test gives insight into the details of treating the disease.

Besides, there are other reasons why doctors prescribe this test.

• If there is any family history of disease.

• To determine if an individual has a particular mutation that causes the disease.

• For predictive testing in people who are susceptible to inherited illnesses.

• To assess gene alterations linked to certain types of cancer.

• For genetic counseling during pregnancy or before conception.

Components of Sanger Sequencing Single Variant Test

The focus of this test is to analyze DNA segment containing a suspected variant. Some of the major components are-

Targeting Gene Region

The precise area of the gene where the mutation is anticipated to occur is examined in the lab. This makes it possible to identify the genetic alteration precisely.

Identification of Variants

The test establishes whether the variant is homozygous (found in both copies), heterozygous (found in one copy), or completely absent.

Sequences Validation

Experts can verify the accuracy of the observed mutation thanks to Sanger sequencing, which offers a comprehensive readout of the DNA sequence.

Procedure and Preparation

There is no special preparation required to undergo the test. The test requires the lab technician to collect blood from the vein for testing purposes. No need to undergo any fasting. However, it is important for the patient to inform doctors about the medical history and genetic test reports.