Renal stone: A stone in the kidney (or lower down in the urinary tract). Also called a kidney stone. Renal stones are a common cause of blood in the urine and pain in the abdomen, flank, or groin. Kidney stones occur in 1 in 20 people at some time in their life. The development of the stones is related to decreased urine volume or increased excretion of stone-forming components such as calcium, oxalate, urate, cystine, xanthine, and phosphate.
In general, antibody tests that use blood can detect HIV slightly sooner after infection than tests done with oral fluid. It can take 3 to 12 weeks (21-84 days) for an HIV-positive personâs body to make enough antibodies for an antibody test to detect HIV infection. This is called the window period.
The time period from infection with HIV until the body produces enough HIV antibodies to be detected by an HIV antibody test is called the window period. Most people develop HIV antibodies within 3 months after they are infected with HIV. But the window period can vary depending on the HIV test used.In general, anyone who has a negative result on an HIV antibody test within 3 months of a possible exposure to HIV should have the test repeated in 3 months.The HIV antigen/antibody test can detect both HIV antigen (a part of the virus) and HIV antibodies in blood.n general, anyone who has a negative result on an HIV antibody test within 3 months of a possible exposure to HIV should have the test repeated in 3 months. The HIV antigen/antibody test can detect both HIV antigen (a part of the virus) and HIV antibodies in blood.