RPR
Alternate Names : Rapid Plasma Reagin
Definition
The RPR screening test is similar to the older VDRL test as both measure reaginic antibodies. These antibodies are usually produced during infection with syphilis as a result of the body's interaction with the bacteria which causes syphilis (Treponema pallidum). This test is a useful screening tool for syphilis, yet its ability to detect syphilis depends on the stage of the disease.
In the earliest stage of syphilis (primary syphilis) this test is positive approximately 60% of the time. The test's usefulness increases with later stages of syphilis where it may be positive 70-90% of the time. In the final stages of syphilis, this test is usually positive in only 60% of cases.
There are several conditions which may cause a false positive test. These include HIV, lyme disease, mycoplasma pneumonia, malaria and systemic lupus erythematosus. This screening test, if found to be positive, must be confirmed by a more specific test for syphilis such as FTA-ABS.
Pictures & Images
 See all Pictures & Images
Why is the Test Performed?
Syphilis is a highly treatable infection. In addition to screening individuals with signs and symptoms of sexually transmitted diseases, syphilis screening is a routine part of prenatal care during pregnancy. Several states also require screening for syphilis prior to obtaining a marriage license.
Today's Top News Stories | • | 2 Techniques Found Effective in Carotid Artery Narrowing - Sep 06, 2008, 09:00
Angioplasty with stenting and endarterectomy successful in preventing ipsilateral stroke. | • | MRIs Don't Improve Breast Cancer Care, Outcome - Sep 06, 2008, 19:00
Study finds getting one delays treatment, raises odds of mastectomy. | • | FDA to List Drugs Under Review for Safety Issues - Sep 05, 2008, 14:00
But officials say patients taking meds on Web site shouldn't overreact or stop taking them. | • | No Place Safe From Allergies - Sep 05, 2008, 16:00
Most can be controlled, but you need to know what triggers them, experts say. | • | Almost Half of Adults Will Develop Knee Osteoarthritis by 85 - Sep 05, 2008, 14:00
Study finds risk is greatest for those overweight or obese at age 45. |
|
