Answers:

Question # 5: Identify the crystals that can be seen in the following two pictures. Given that the patients pH was 5.5, which of the sets of crystals could possibly be seen in the patients urine? Answer: Picture # 1 is of a triple phosphate crystal. These crystals are observed in an alkaline urine and would thus not be present in the patients sample. Picture # 2 is a picture of uric acid and calcium oxalate crystals. These crystals are present in acidic urine, and thus could be present in the patients sample.