Varicella-zoster: PCR-qualitative determination (blood)

Varicella-zoster virus (VZV) is the causative agent of chickenpox and herpes zoster. After primary infection, the virus remains in the body in a latent state and can be reactivated when the immune system is weakened. One of the most accurate methods for diagnosing this infection is the qualitative determination of viral DNA by the polymerase chain reaction (PCR) method.

What is PCR-qualitative detection of Varicella-zoster?

PCR (polymerase chain reaction) is a highly sensitive laboratory method that can detect even minute amounts of viral DNA in blood samples. Qualitative means that the test result will only show the presence or absence of the virus, without quantitative measurement.

When is it necessary to conduct an analysis?

It is recommended to take a PCR test for Varicella-zoster in the following cases:

1. Suspicion of primary infection: symptoms of chickenpox, especially in adults or immunocompromised individuals.
2. Diagnosis of herpes zoster: rash on the body in the form of blisters, pain along the nerves.
3. Monitoring the condition of immunocompromised patients: during organ transplantation, HIV infection or chemotherapy.
4. Examination of pregnant women: in contact with infected people or if there are suspicious symptoms.
5. Post-treatment monitoring: to confirm elimination of the virus from the body.

Advantages of the PCR method

The PCR method has a number of important advantages compared to other diagnostic methods:

1. High sensitivity and specificity: allows you to detect the virus even at low concentrations.
2. Speed of obtaining the result: The analysis takes 1–2 business days.
3. Detection of latent infection: the ability to diagnose a virus in a dormant state.
4. Possibility of diagnosis in early stages: when clinical symptoms have not yet appeared.

How to prepare for the analysis?

To obtain accurate results, you must follow these recommendations:

1. Donate blood on an empty stomach or 3–4 hours after a light meal.
2. Avoid physical exertion and stress before taking the test.
3. Inform your doctor about taking antiviral medications.

Decoding the results

The results of the analysis are presented as “positive” or “negative”:

Where can I take the test in Khmelnytskyi?

At the medical center Medilab You can quickly, comfortably and safely take a PCR test for Varicella-zoster. Our specialists ensure high accuracy of results thanks to modern equipment and qualified personnel.

Advantages of taking the analysis at Medilab:

1. Fast results within 24–48 hours.
2. Convenient online booking system.
3. Confidentiality and quality of service.

PCR-qualitative determination of Varicella-zoster in blood is a reliable diagnostic method that allows you to detect the virus in time, even if symptoms have not yet appeared. Timely diagnosis allows you to start treatment and avoid complications. You can take the test at Medilab by signing up online or visiting one of our sample collection points in Khmelnytskyi.