Pregnancy urine dipstick tests are based on the lateral flow technique. Also a urine dipstick test for proteinuria can give a rough estimate of albuminuria. These can be seen in the urine (urinalysis) on microscopic and chemical (dipstick) examination. Behind it are the filling points for oil and screen wash fluid and the dipstick. Another method for detection of microscopic hematuria is the dipstick method. Gearbox oil dipstick remains on the left rear. False positives can occur with dipstick testing if free hemoglobin or myoglobin are present. Some years had threaded dipstick tubes. A rapid dipstick test is available but is not as accurate. BTA-STAT is a dipstick immunoassay for detection of human complement factor H-related protein. The test was a three-step process using a dipstick and small tray. A rapid dipstick test is available to determine the presence of "V. cholerae". As a result, the engine itself had no dipstick for checking the oil level. The most familiar example is the oil level dipstick found on most internal combustion engines. This dipstick for this transmission says "M V" on the dipstick handle in Mazda vehicles.