{"id":12668,"date":"2026-10-19T06:45:03","date_gmt":"2026-10-19T06:45:03","guid":{"rendered":"https:\/\/www.medkart.in\/blog\/?p=12668"},"modified":"2026-10-19T06:48:05","modified_gmt":"2026-10-19T06:48:05","slug":"vdrl-test-positive-meaning","status":"publish","type":"post","link":"https:\/\/www.medkart.in\/blog\/vdrl-test-positive-meaning\/","title":{"rendered":"VDRL Test: Full Form, Report Results and What a Positive Means"},"content":{"rendered":"<style>\n.entry-content a:not([href*=\"medkart.in\"]) > span {\n    vertical-align: super !important;\n    font-size: 85% !important;\n    line-height: 0 !important;\n}\n<\/style>\n<style>\n.entry-content h2,\n.entry-content h3,\n.entry-content h4 {\n    white-space: nowrap !important;\n}\n<\/style>\n<p><span style=\"font-weight: 400;\">VDRL stands for Venereal Disease Research Laboratory, the laboratory that developed the test. It is a screening test for syphilis, and a report that reads VDRL positive or VDRL reactive means the screening test has picked something up.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">A positive screening result is not a diagnosis. It is the first of two steps, and several conditions unrelated to syphilis can produce one. This article sets out what the test measures, what a positive result does and does not establish, what causes a false positive, and what happens next.<\/span><\/p>\n<h2><b>What Is the VDRL Test, and What Does the Full Form Stand For?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">VDRL is the abbreviation for Venereal Disease Research Laboratory. MedlinePlus<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/medlineplus.gov\/ency\/article\/003515.htm\"><span style=\"font-weight: 400;\">1<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> describes it as a screening test for syphilis that measures antibodies the body may produce after infection.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It is a non-treponemal test, so it does not look for the syphilis bacterium itself. It detects a broader antibody response, which is why a second and more specific test is always needed.<\/span><\/p>\n<h3><b>Why a Vdrl Report Has No Normal Range\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">A VDRL result is not a number with a reference range. It is reported first as reactive or non-reactive, and then, if reactive, as a titre.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The Centers for Disease Control and Prevention<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/www.cdc.gov\/std\/treatment-guidelines\/syphilis.htm\"><span style=\"font-weight: 400;\">2<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> states that non-treponemal results are reported quantitatively, with the serum diluted to find the highest titre that still reacts. A titre is written as a ratio such as 1:8 or 1:32.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">What matters clinically is change rather than any single figure. The CDC treats a fourfold change, equal to two dilutions, as the threshold for a meaningful difference between two results.<\/span><\/p>\n<h2><b>What Does a Vdrl Positive Result Mean?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">It means antibodies were detected that may come from syphilis. MedlinePlus<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/medlineplus.gov\/lab-tests\/syphilis-tests\/\"><span style=\"font-weight: 400;\">3<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> describes a positive screening result as showing antibodies that may be from infection, and states that a second test is needed to confirm it.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The reason for two tests is specificity. The screening test casts a wide net, while the treponemal test looks for antibodies made only against syphilis.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Timing also affects the result. MedlinePlus records that VDRL sensitivity approaches 100% during the secondary and latent stages, and that it is less sensitive in the earliest and latest stages.<\/span><\/p>\n<h2><b>What Causes a False Positive Vdrl Result?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Several conditions can trigger the antibody response the test detects. None of them can be distinguished from syphilis without the confirmatory test.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Feature<\/b><\/td>\n<td><b>What the sources say<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Other infections<\/b><\/td>\n<td><span style=\"font-weight: 400;\">MedlinePlus names hepatitis C, HIV, Lyme disease, malaria and certain types of pneumonia among the causes of a false positive.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Autoimmune conditions<\/b><\/td>\n<td><span style=\"font-weight: 400;\">MedlinePlus names systemic lupus erythematosus and some other autoimmune disorders. The CDC also lists autoimmune conditions generally.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Pregnancy<\/b><\/td>\n<td><span style=\"font-weight: 400;\">The CDC names pregnancy among the causes of a false-positive non-treponemal result.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Recent vaccination<\/b><\/td>\n<td><span style=\"font-weight: 400;\">The CDC names vaccinations among the causes.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Injecting drug use<\/b><\/td>\n<td><span style=\"font-weight: 400;\">The CDC names injecting drug use among the causes.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Older age<\/b><\/td>\n<td><span style=\"font-weight: 400;\">The CDC names older age among the causes.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span style=\"font-weight: 400;\">A false positive is a property of the screening test, not a laboratory mistake. It is the reason the second test exists.<\/span><\/p>\n<h2><b>Is a VDRL Positive Result Dangerous?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The result itself is information. What matters is whether syphilis is confirmed, and syphilis is treatable.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The World Health Organization<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/syphilis\"><span style=\"font-weight: 400;\">4<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> describes syphilis as a preventable and curable bacterial sexually transmitted infection caused by Treponema pallidum. It describes a primary stage with a painless sore, and a secondary stage with a rash on the palms and soles. The latent stage often has no symptoms.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Untreated infection is what carries risk. MedlinePlus<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/medlineplus.gov\/syphilis.html\"><span style=\"font-weight: 400;\">5<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> notes that symptoms can go away and come back, and that syphilis can rarely cause serious health problems. In pregnancy the WHO reports that untreated or incorrectly treated syphilis leads to adverse birth outcomes in 50% to 80% of cases.<\/span><\/p>\n<h2><b>Which Tests Follow a Positive Vdrl Result?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">A confirmatory treponemal test comes next. MedlinePlus names the FTA-ABS test as the more specific follow-up, and the Indian national guidelines<\/span><span style=\"font-weight: 400;\">[<\/span><a href=\"https:\/\/nhsrcindia.org\/sites\/default\/files\/2021-03\/Guidelines%20for%20Syphilis%20Screening%20during%20Pregnancy.pdf\"><span style=\"font-weight: 400;\">6<\/span><\/a><span style=\"font-weight: 400;\">]<\/span><span style=\"font-weight: 400;\"> name the Treponema pallidum haemagglutination assay for the same purpose.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Quantitative testing runs alongside it. The Indian guidelines direct testing both qualitatively and quantitatively, because the titre informs treatment for the person tested and, in pregnancy, for the newborn.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The CDC is explicit that one test is not enough. It states that using only one type of serologic test, whether non-treponemal or treponemal, is insufficient for diagnosis.<\/span><\/p>\n<p><b>Also Read:<\/b> <a href=\"https:\/\/www.medkart.in\/blog\/chancroid-soft-chancre\/\"><span style=\"font-weight: 400;\">The Facts About Chancroid<\/span><\/a><\/p>\n<h2><b>How Common Is Syphilis, and How Is It Screened in India?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">The WHO estimates that 8 million adults aged 15 to 49 acquired syphilis in 2022. For the South-East Asia Region, the Indian guidelines cite WHO estimates of roughly 600,000 pregnant women infected each year, with 230,000 associated adverse outcomes.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">India screens for it universally in pregnancy. The guidelines provide for point-of-care testing at sub-centres and village health and nutrition days, with RPR testing at facilities above sub-centre level.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Repeat testing is built in. The guidelines direct that women at high risk, in high-prevalence areas, or with previous adverse pregnancy outcomes be screened again in the third trimester or at delivery.<\/span><\/p>\n<h2><b>How Is Syphilis Treated Once the Diagnosis Is Confirmed?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">With an antibiotic injection, prescribed and given by a clinician. The WHO states that benzathine penicillin is first-line treatment, and the only one it recommends for pregnant women with syphilis.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The CDC states that parenteral penicillin G is the preferred drug for all stages. The Indian guidelines set different injection schedules for early and late disease, chosen by the stage of infection and the antibody titre.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">This article gives no amounts or schedules. Which preparation is used, and how much, is decided by the prescriber after the stage has been established.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Penicillin allergy does not change the drug in pregnancy. The CDC states that pregnant women with syphilis who report penicillin allergy should be desensitised and treated with penicillin.<\/span><\/p>\n<h2><b>When Should You See a Doctor?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Take the report to a doctor as soon as you receive it, whether or not you feel unwell. A screening result needs a confirmatory test beside it. That is not something to postpone.<\/span><\/p>\n<table>\n<tbody>\n<tr>\n<td><b>Situation<\/b><\/td>\n<td><b>What to do<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>Your VDRL result is reactive for the first time<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Book an appointment for confirmatory testing. The CDC states that one type of test alone is insufficient for diagnosis.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>You are pregnant<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Tell the doctor looking after the pregnancy the same day. The WHO advises testing at the first prenatal visit and treating immediately if the result is positive.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>You have a painless sore, or a rash on the palms or soles<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Mention it specifically. The WHO describes both among the features of the primary and secondary stages.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>You have a regular sexual partner<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Partner testing is part of care. The Indian guidelines make testing of the spouse or partner of a syphilis-positive woman mandatory, followed by treatment.<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>You were told to return for repeat testing<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Go back. The CDC uses a fourfold change in titre between tests as the measure of a meaningful difference.<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b>What This Article Cannot Tell You\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">It cannot say whether any individual has syphilis. A reactive screening test is one input, and the confirmatory test, the clinical history and the stage all sit outside what a page can know.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It cannot say whether a particular positive result is a false positive. The conditions listed above are the ones clinicians consider, and only the second test distinguishes them.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It cannot say which treatment applies or how much is needed. That depends on the stage and the titre, and it is decided by a prescriber.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It also cannot say what a result means for a pregnancy. That is a question for the clinician managing it.<\/span><\/p>\n<h2><b>Where Can You Buy Prescribed Medicines on Medkart?\u00a0<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Treatment for syphilis is an injection given by a clinician, not something used at home. A prescription is needed for the medicine itself.<\/span><\/p>\n<p><a href=\"https:\/\/www.medkart.in\/\"><span style=\"font-weight: 400;\">Medkart<\/span><\/a><span style=\"font-weight: 400;\"> sells <\/span><a href=\"https:\/\/www.medkart.in\/order-medicine\"><span style=\"font-weight: 400;\">medicines<\/span><\/a><span style=\"font-weight: 400;\"> online from several manufacturers and highlights quality credentials for its generic medicine range. Products listed under <\/span><a href=\"https:\/\/www.medkart.in\/composition\/benzathine-penicillin-1200000-iu\"><span style=\"font-weight: 400;\">benzathine penicillin<\/span><\/a><span style=\"font-weight: 400;\"> include <\/span><a href=\"https:\/\/www.medkart.in\/order-medicine\/huelin-2.4miu-injection\"><span style=\"font-weight: 400;\">Huelin<\/span><\/a><span style=\"font-weight: 400;\"> from Jolly Healthcare, alongside <\/span><a href=\"https:\/\/www.medkart.in\/order-medicine\/penidure-la-12mg-injection-vial-1-ml\"><span style=\"font-weight: 400;\">Penidure LA<\/span><\/a><span style=\"font-weight: 400;\">, which the listing marks as discontinued. Availability, pack size and price differ between products and can change.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nothing here says any of these treats the condition, which is a judgement for the prescriber. It is also possible to <\/span><a href=\"https:\/\/www.medkart.in\/search\"><span style=\"font-weight: 400;\">search by name<\/span><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/www.medkart.in\/browse-all-medicines\"><span style=\"font-weight: 400;\">browse the full medicine list<\/span><\/a><span style=\"font-weight: 400;\">, or find the <\/span><a href=\"https:\/\/www.medkart.in\/store-locator\"><span style=\"font-weight: 400;\">nearest Medkart store<\/span><\/a><span style=\"font-weight: 400;\">. <\/span><a href=\"https:\/\/www.medkart.in\/compare-medicines\"><span style=\"font-weight: 400;\">Medkart&#8217;s medicine comparison tools<\/span><\/a><span style=\"font-weight: 400;\"> can be used to compare listed options on:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Active ingredient<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Strength<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Dosage form<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Manufacturer<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pack size<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Current price<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Any medicine for a confirmed infection should be obtained and used exactly as the prescriber directs.<\/span><\/p>\n<h2><b>Key takeaways\u00a0<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">VDRL stands for Venereal Disease Research Laboratory, and the test screens for syphilis.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A VDRL result is reported as reactive or non-reactive, with a titre rather than a normal range.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A positive screening result is not a diagnosis and always needs a confirmatory treponemal test.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Hepatitis C, HIV, lupus, malaria, pregnancy, vaccination and older age can all cause a false positive.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The CDC treats a fourfold change in titre as the threshold for a meaningful difference.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Syphilis is described by the WHO as preventable and curable, and benzathine penicillin is first-line.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India screens all pregnant women, with repeat testing for those at higher risk.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Partner testing is part of care under the Indian guidelines.<\/span><\/li>\n<\/ul>\n<h2><b>FAQs\u00a0<\/b><\/h2>\n<h3><b>Q. Can a VDRL test stay positive after treatment?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Sometimes, and that does not automatically mean treatment failed. The CDC records that non-treponemal titres usually fall after treatment and may become non-reactive, but that some people show a slower decline and some titres persist. Interpreting that pattern is what the follow-up appointments are for.<\/span><\/p>\n<h3><b>Q. Is the VDRL test the same as the RPR test?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">They are two versions of the same idea. The CDC describes VDRL and RPR as equally valid assays, but notes that RPR titres are frequently slightly higher. It states that results from the two cannot be compared directly, which is why follow-up testing is done using the same assay.<\/span><\/p>\n<h3><b>Q. Can a VDRL test be done on spinal fluid?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes. MedlinePlus states that the test is most often done on a blood sample, and that it can also be done on a sample of spinal fluid. That version is used when a doctor is investigating the nervous system rather than as a routine screen.<\/span><\/p>\n<h3><b>Q. Does a negative VDRL result rule out syphilis?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Not on its own. MedlinePlus states that the test may give a false-negative result during early and late-stage syphilis, while its sensitivity nears 100% in the secondary and latent stages. Anyone with a recent exposure or with symptoms should say so, because timing changes how the result is read.<\/span><\/p>\n<h3><b>Q. Is syphilis screening free during pregnancy in India?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">It is part of the national antenatal programme rather than an optional extra. The aim stated in the Indian guidelines is universal screening of pregnant women. Testing is pushed down to the lowest level of the health system so that distance is less of a barrier.<\/span><\/p>\n<h3><b>Q. Does a partner need testing if one person tests positive?\u00a0<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Yes, and the Indian guidelines are firm about it. They make testing of the spouse or partner mandatory where a pregnant woman tests positive, followed by treatment. The CDC also describes confidential notification of at-risk contacts so they can be evaluated.<\/span><\/p>\n<h2><b>References\u00a0<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/medlineplus.gov\/ency\/article\/003515.htm\"><span style=\"font-weight: 400;\">https:\/\/medlineplus.gov\/ency\/article\/003515.htm<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.cdc.gov\/std\/treatment-guidelines\/syphilis.htm\"><span style=\"font-weight: 400;\">https:\/\/www.cdc.gov\/std\/treatment-guidelines\/syphilis.htm<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/medlineplus.gov\/lab-tests\/syphilis-tests\/\"><span style=\"font-weight: 400;\">https:\/\/medlineplus.gov\/lab-tests\/syphilis-tests\/<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/syphilis\"><span style=\"font-weight: 400;\">https:\/\/www.who.int\/news-room\/fact-sheets\/detail\/syphilis<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/medlineplus.gov\/syphilis.html\"><span style=\"font-weight: 400;\">https:\/\/medlineplus.gov\/syphilis.html<\/span><\/a><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/nhsrcindia.org\/sites\/default\/files\/2021-03\/Guidelines%20for%20Syphilis%20Screening%20during%20Pregnancy.pdf\"><span style=\"font-weight: 400;\">https:\/\/nhsrcindia.org\/sites\/default\/files\/2021-03\/Guidelines%20for%20Syphilis%20Screening%20during%20Pregnancy.pdf<\/span><\/a><\/li>\n<\/ul>\n<p><b>Medical disclaimer:<\/b><span style=\"font-weight: 400;\"> This article gives general information about syphilis testing and is not a diagnosis. It cannot tell any individual whether they have syphilis, whether a result is a false positive, or which treatment suits them, because those decisions need a doctor and the right tests. Anyone with a reactive result or with the symptoms described here should see a doctor rather than self-treat, and no medicine should be started, stopped or changed without advice from the prescriber or a qualified pharmacist.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>VDRL stands for Venereal Disease Research Laboratory, the laboratory that developed the test. It is a screening test for syphilis, and a report that reads VDRL positive or VDRL reactive means the screening test has picked something up. A positive screening result is not a diagnosis. It is the first of two steps, and several [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":12669,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[952],"tags":[],"class_list":["post-12668","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-infection"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>VDRL Test: Full Form, Positive Meaning &amp; Results | Medkart<\/title>\n<meta name=\"description\" content=\"Learn about the VDRL test full form, what a VDRL positive result means, why there is no normal range, the causes of a false positive, and what to do next.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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