Test ID: ZG353
Specimen Type: 24 or random Urine
Frequency: Setup: Tues, Thurs; analytic time 4 days
Instructions: 10mL urine from random or timed collection. No preservative. Frozen. Min
Text: Useful For: Evaluation of the differential diagnosis of hyperammonemia
and hereditary orotic aciduria. When orotic acid is measured after a
protein load or administration of allopurinol, excretion of orotic acid
is a very sensitive indicator of ornithine transcarbamylase activity.