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.
Because certain medications can make your urine more acidic, your physician also may order the urine pH test to determine if the medicine is making your urine too acidic. The urine pH test can also be used to determine the best medication to prescribe when you have a urinary tract infection. For example, according to the National Institutes of Health, antibiotic medications such as streptomycin, neomycin, and kanamycin are most effective when your urine is alkaline (NIH, 2001).