100 pH Urine Test Strips for Professional/GP UsenThey are intended solely for use by medical professionals who will know how to correctly interpret the results.nLong expiry datesnFantastic value for moneyn Reasons for why a pH test maybe done. It may be done to see if you are at risk for kidney stones. Acidic urine is associated with xanthine, cystine, uric acid, and calcium oxalate stones. Alkaline urine is associated with calcium carbonate, calcium phosphate, and magnesium phosphate stones.