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VDRL-RPR (Rapid Plasma Reagin)

VDRL-RPR (Rapid Plasma Reagin)

Also referred as
Syphilis Screening Test
Syphilis Detection Test
Syphilis Serology
For men & women
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The VDRL-RPR (Rapid Plasma Reagin) is a blood test used to detect syphilis, a sexually transmitted disease (STD). It detects the presence of antibodies produced by the body in response to the syphilis infection. This test is used for initial syphilis screening and monitoring the effectiveness of treatment in individuals diagnosed with the disease.

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Understanding VDRL-RPR (Rapid Plasma Reagin)

Syphilis is a bacterial infection caused by the Treponema pallidum bacterium. The VDRL-RPR (Rapid Plasma Reagin) test helps screen for syphilis in individuals who present with symptoms suggestive of syphilis, such as small and painless sores near the site of infection, skin rash, fever, swollen lymph glands, hair loss, headaches, muscle aches, tiredness, etc. It may also be used to screen individuals who are at high risk, such as sexually active individuals, pregnant women, and people with other STDs. This test also helps monitor the effectiveness of syphilis treatment by measuring changes in antibody levels over time.

The VDRL-RPR (Rapid Plasma Reagin) test is non-treponemal, meaning it does not directly detect the bacteria but rather detects antibodies called reagin, which are produced by the body in response to the cellular damage caused by the bacteria causing syphilis. A positive test result indicates the presence of reagin antibodies, suggesting a current or past syphilis infection. In contrast, a negative test result indicates no detectable reagin antibodies, suggesting the absence of syphilis. 

Apart from syphilis, reagin antibodies can also be found in other infections such as tuberculosis, malaria, viral pneumonia, and other autoimmune diseases. Hence, the VDRL-RPR (Rapid Plasma Reagin) test results should be interpreted in conjunction with other specific tests and clinical findings to diagnose syphilis definitively.

The VDRL-RPR (Rapid Plasma Reagin) doesn’t require you to fast or stop taking medications. If your doctor wants you to make an exception, they will inform you before your test. However, avoid alcohol consumption before the test. Drinking alcohol within 24 hours of the test can give a false-negative result. 

Test result ranges may vary across laboratories. Abnormal test results require an expert interpretation; therefore, never try to self-medicate at home based solely on these results, and always consult a doctor for a proper understanding of the test results. The insights from this test help the doctor tailor an appropriate treatment plan.

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What does VDRL-RPR (Rapid Plasma Reagin) measure?

The VDRL-RPR (Rapid Plasma Reagin) test looks for antibodies (specific proteins) that react to syphilis in the blood. This means the test doesn't find the actual bacteria that cause syphilis. Instead, it looks for antibodies against substances given off by cells that have been harmed by the bacteria.  Antibodies are a specific type of protein produced by your immune system to fight off any invaders, such as bacteria, viruses, or toxins. Detecting these antibodies can help your doctors know if you have syphilis. Untreated syphilis can spread to your eyes, blood vessels, heart, and brain. But it can be easily cured if treated in the early stages.

FAQs related to VDRL-RPR (Rapid Plasma Reagin)

The VDRL-RPR (Rapid Plasma Reagin) test is done to screen syphilis when you experience signs and symptoms like body rashes, mild fever, hair loss, sore throat, weight loss, swollen glands, muscle pains, headaches, etc. This test is also a routine test in prenatal care during pregnancy. It also helps monitor treatment response in known cases of syphilis.
A VDRL-RPR (Rapid Plasma Reagin) test is a normal blood test with no risks. However, since this test involves a needle prick to withdraw the blood sample, in very rare cases, a patient may experience increased bleeding, hematoma formation (blood collection under the skin), bruising or infection at the site of needle prick. Most of these symptoms go away in a day or two.
There are four stages of syphilis that include primary, secondary, latent and tertiary syphilis. At the primary stage of syphilis, you might notice single sore or multiple sores in or around the genital areas and lips or mouth in the initial stage. During the secondary stage, you may have rough and reddish brown skin rashes and sores in your mouth, and genital area.The latent stage of syphilis there are no visible signs or symptoms. Without treatment, you can continue to have syphilis in your body for years. In the tertiary stage, syphilis can affect many different organ systems including heart, blood vessels, brain and nervous system. Tertiary syphilis is very serious and would occur 10–30 years after your infection began.
A positive test result means you may have syphilis. Consult your doctor and discuss your test reports. You may be asked to go for a confirmatory test with a more specific test for syphilis, such as FTA-ABS.
False-positive VDRL-RPR (Rapid Plasma Reagin) test results can occur in certain acute and chronic infections, autoimmune diseases such as tuberculosis, malaria, viral pneumonia, lupus, rheumatoid arthritis, HIV, lyme disease, during pregnancy, and after vaccination.
False-negative test results mean that the RPR test is negative in the presence of syphilis infection. The body does not always produce antibodies specifically in response to the syphilis bacteria, so the test is not always accurate. False-negatives may occur in people with early and late stage syphilis. Hence, other tests are required to confirm the results.
Yes, syphilis is curable with the right antibiotics. However, treatment cannot reverse the damage that might have been caused by the infection. If syphilis is treated too late, it can permanently damage your heart and brain even after the infection is gone.
Syphilis is most contagious during the first two stages and the early latent stage. It can spread through sexual routes, therefore, it is known as sexually transmitted disease (STD). It can enter the body through the genitals, mouth, or broken skin. A pregnant woman infected with syphilis can pass it on to her baby.
The best and the most certain method of prevention of syphilis infection is to avoid sexual contact or only to maintain sexual contact with one faithful partner who is not infected.
Yes, syphilis infection can recur again if the person again gets exposed to the bacteria causing it.
Content created by
Written by:
Dr. Surabhi Srivastava
BDS
Reviewed by:
Dr. Swati Gupta (Anand)
MBBS, MD Lab Medicine
Want to know moreRead our editorial policy
Last Updated18th Nov 2025

VDRL-RPR (Rapid Plasma Reagin) test price for other cities

Price inAhmedabadRs. 136
Price inAllahabadRs. 136
Price inAmritsarRs. 136
Price inBangaloreRs. 136
Price inBhopalRs. 136

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VDRL-RPR (Rapid Plasma Reagin)