Test ID: OROT
Orotic Acid, Urine
Secondary ID 
A test code used for billing and in test definitions created prior to November 2011
8905
Useful For Suggests clinical disorders or settings where the test may be helpful
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 (OTC) activity. An allopurinol challenge may be helpful in determining whether a female patient may be a carrier of an OTC mutation if molecular genetic testing was not informative.
Genetics Test Information Provides information that may help with selection of the correct test or proper submission of the test request
Evaluation of the differential diagnosis of hyperammonemia and hereditary orotic aciduria.
Method Name A short description of the method used to perform the test
Colorimetric
Reporting Name A shorter/abbreviated version of the Published Name for a test; an abbreviated test name
Orotic Acid, U
Aliases Lists additional common names for a test, as an aid in searching
Argininosuccinic aciduria
ASA
Cit I
Citrullinemia I
Hereditary orotic aciduria
HHH
Hyperornithinemia, hyperammonemia, homocitrullinuria syndrome
LPI
Lysinuric protein intolerance
Ornithine transcarbamylase deficiency
OTC
UCD
UMPS
Ures Cycle Disorders
Uridine monophosphate synthase deficiency
ASA
Cit I
Citrullinemia I
Hereditary orotic aciduria
HHH
Hyperornithinemia, hyperammonemia, homocitrullinuria syndrome
LPI
Lysinuric protein intolerance
Ornithine transcarbamylase deficiency
OTC
UCD
UMPS
Ures Cycle Disorders
Uridine monophosphate synthase deficiency
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