Test, VDRL
A blood test for syphilis (VDRL stands for Venereal Disease Research Laboratory) that detects an antibody that is present in the bloodstream when a patient has syphilis.
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- Test, Venereal Disease Research Laboratory
A blood test for syphilis. Venereal Disease Research Laboratory is commonly abbreviated VDRL. A negative (“nonreactive”) VDRL is compatible with a person not having syphilis. However, a person may a negative VDRL and still have syphilis since, in the early stages of the disease, the VDRL often gives negative results. This is called a false […]
- Test, visual acuity
This test measures how well you see at various distances. It is the familiar eye chart test. The eye chart itself — the usual one is called Snellen’s chart — is imprinted with block letters that line-by-line decrease in size, corresponding to the distance at which that line of letters is normally visible. The letters […]
- Test, visual field
A test which measures the extent and distribution of the field of vision. The visual field test may be done by a number of methods including what are termed confrontation, tangent screen exam and automated perimetry. Although the test may seem tedious, it is not painful or uncomfortable. Many diseases can adversely affect the visual […]
- Testicles
The testicles (also called testes or gonads) are the male sex glands. They are located behind the penis in a pouch of skin called the scrotum. The testicles produce and store sperm, and they are also the body’s main source of male hormones (testosterone). These hormones control the development of the reproductive organs and other […]
- Testicular cancer
A malignant tumor of the male sex organ (testicle) that normally produces the hormone testosterone. It is one of the most common cancers in young men. Most testicular cancers are found by men themselves, as lumps in the testicles. The risk of testicular cancer is increased in males whose testicles did not move down normally […]