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  • Veterans' Painkiller Abuse Can Raise Odds for Heroin Use

    Posted: 08/23/2016

    Veterans' Painkiller Abuse Can Raise Odds for Heroin Use TUESDAY, Aug. 23, 2016 (HealthDay News) -- Veterans who misuse narcotic painkillers may be at high risk for heroin use, a new study cautions. The research included nearly 3,400 U.S. veterans who had never misused painkillers or used heroin. Their health was followed for 10 years. During that time, 500 of them began using heroin. Of those, 77 percent misused opioid painkillers before they started using heroin. Other risk factors for heroin use incl...

  • Vitamin D Levels May Fall When Women Stop Taking Birth Control

    Posted: 08/11/2016

    Vitamin D Levels May Fall When Women Stop Taking Birth Control THURSDAY, Aug. 4, 2016 (HealthDay News) -- Vitamin D levels may drop after women stop using birth control pills or other contraceptives with estrogen, researchers report. The vitamin is involved in the immune system and in managing calcium in the blood, which influences bone health. The body produces it when exposed to sunlight. During pregnancy, women produce higher amounts of vitamin D to help fetal bone development and are at increased ri...

  • Vision Trouble Can Dim Life's Prospects

    Posted: 08/09/2016

    Vision Trouble Can Dim Life's Prospects THURSDAY, July 28, 2016 (HealthDay News) -- People with vision problems may face a higher risk of unemployment, poverty and mental health problems, a new British study suggests. "Our focus has mostly been on severe visual loss and treating the eye diseases that cause it," said Mary Frances Cotch, chief of epidemiology at the U.S. National Eye Institute. "This study is saying we probably shouldn't wait until that time since people with mild visual loss are being af...

  • Von Willebrand Panel

    Posted: 07/31/2016

    Von Willebrand Panel Does this test have other names? von Willebrand factor antigen test, von Willebrand factor activity test, ristocetin cofactor activity test, factor VIII coagulant activity test What is this test? This panel of tests is used to diagnose von Willebrand disease. This is a bleeding disorder that causes excessive bleeding from minor injuries or normal physical processes such as menstruation. It's the most common inherited bleeding disorder, but few people with the disease have symptoms. ...

  • VLDL Cholesterol

    Posted: 07/31/2016

    VLDL Cholesterol Does this test have other names? Very low-density lipoprotein cholesterol test What is this test? This test measures the amount of very low-density lipoprotein (VLDL) in your blood. VLDL cholesterol is a type of blood fat. It's considered one of the "bad" forms of cholesterol, along with LDL cholesterol and triglycerides. This is because high levels cholesterol can clog your arteries and lead to a heart attack. Sixty percent of a VLDL particle is a triglyceride, This test is usually use...

  • Vitamin D

    Posted: 07/31/2016

    Vitamin D Does this test have other names? 25-hydroxyvitamin D (25-high-DROX-ee-VIE-tuh-min D), 25(OH)D What is this test? Vitamin D is mainly found in fortified dairy foods, juice, breakfast cereal, and certain fish. This vitamin plays many roles in the body. But because it helps the body absorb calcium from foods and supplements, it's particularly important for bone health. Vitamin D has many additional roles in the body. Vitamin D comes in several forms. When ultraviolet light, such as sunlight, hits...

  • Viral Culture

    Posted: 07/31/2016

    Viral Culture Does this test have other names? No. What is this test? This test checks to see whether an infection is caused by a bacterium or a virus. It can also tell which specific virus is causing your infection. Viral infections can cause illnesses anywhere in the body. This includes the skin, digestive tract, urinary tract, brain, lungs, and eyes. These illnesses can range from minor problems to serious diseases. Viral cultures are done in different ways, depending on your condition and the virus ...

  • Vitamin B-12 and Folate

    Posted: 07/31/2016

    Vitamin B-12 and Folate Does this test have other names? Cobalamin, Cbl, folic acid, FA What is this test? This test measures the levels of vitamin B-12 and folate in your blood. Your body needs vitamin B-12, also called cobalamin, and folate, also called folic acid, to function normally. Both nutrients play important roles in creating red blood cells and making DNA and RNA to help build cells. B-12 also helps your nervous system function as it should. B-12 is found in fortified cereals and animal produ...

  • Vascular Endothelial Growth Factor

    Posted: 07/31/2016

    Vascular Endothelial Growth Factor Does this test have other names? VEGF, vascular permeability factor, VPF What is this test? This test measures the amount of vascular endothelial growth factor (VEGF) in your blood. VEGF is a substance that helps encourage the growth of new blood vessels. Your body makes more VEGF in certain cases. For example, if your tissues aren't getting enough oxygen, they may make more VEGF so that new blood vessels grow to bring in more oxygen. Your lungs contain VEGF because go...

  • VDRL (CSF)

    Posted: 07/31/2016

    VDRL (CSF) Does this test have other names? CSF VDRL, neurosyphilis test, neurosyphilis detection test What is this test? This test looks for signs of neurosyphilis in your cerebrospinal fluid (CSF). Syphilis is a bacterial infection. It's a sexually transmitted disease (STD) that can also be spread from a pregnant woman to her fetus. Neurosyphilis happens when syphilis isn't treated. It eventually affects the spinal cord, brain, and membranes surrounding the brain. Having HIV or AIDS increases the risk...