9 Studies of adult users of cocaine and heroin have found that youth use of marijuana correlates strongly with later use of cocaine and heroin. Children agedtwelve to seventeen who use marijuana are eighty-five times more likely to use cocaine than children of the same age who have never used those substances.
Urine pH. Urine pH is used to classify urine as either a dilute acid or base solution. Seven is the point of neutrality on the pH scale. The lower the pH, the greater the acidity of a solution; the higher the pH, the greater the alkalinity.ecretion of an acid or alkaline urine by the kidneys is one of the most important mechanisms the body uses to maintain a constant body pH. A highly acidic urine pH occurs in: 1  Acidosis. 2  Uncontrolled diabetes.
Uric acid urine test. The uric acid urine test measures the level of uric acid in urine. Uric acid level can also be checked using a blood test. A 24-hour urine sample is often needed. You will need to collect your urine over 24 hours. Your health care provider will tell you how to do this. Follow instructions exactly so that the results are accurate. Your health care provider may ask you to temporarily stop taking medicines that may affect the test results.