Organic Acid, Comprehensive, Urine


Sunquest Code:OA  
Epic Code:LAB3642Epic Name:Organic Acid, Comprehensive Urine
Synonyms:Urine Lactate; Urine Metabolic Screen
Methodology:Gas chromatography/Mass spectrometry
CPT Code:83918
Test Includes:Organic acid and urine creatinine
Turnaround Time:Performed once/week; results are reported the next day.
Associated Links:

Urine Collection Procedure



Collection Instructions

Specimen:Urine, random collection
Optimal Volume:Submit entire collection; analysis requires 5 mL minimum


Processing and Shipping

Specimen Processing:Room temperature or refrigerated samples must arrive at Biochemical Genetics within 2 hours of collection (preferred). Alternately, store specimen in the freezer and ship on ice. Send in original container, 5 mL minimum.
Test Performed at or Referral Lab Biochemical Genetics  (UMMC-East Bank)


Interpretive

Reference Range:

Interpretive Report

Organic Acids, Urine

ug/mg Cr

2-Keto Glutaric

0-476

2-Keto Isocaproic

0-4

2-OH Butyric

0-4

2-OH Glutaric

0-20

2-OH Isocaproic

0-4

3-Methyl Crotonylglycine

0-4

3-OH 3 Methyl Glutaric

0-40

3-OH Butyric

0-15

3-OH Glutaric

0-4

3-OH Isovaleric

0-50

3-OH Propionic

0-4

4-OH Butyric

0-4

5-OH Hexanoic

0-4

7-OH Octanoic

0-4

Acetoacetic

0-6

Adipic

0-29

Citric

0-1500

Ethylmalonic

0-21

Fumaric

0-10

Glutaric

0-6

Glyceric

0-4

Glyoxylic

0-59

Hexanoylglycine

0-4

Isocitric

0-140

Isovalerylglycine

0-10

Lactic

0-132

Methyl Citric

0-4

Methyl Malonic

0-14

N-acetylaspartic

0-4

Oxalic

0-300

Phenylacetic

0-4

Phenyllactic

0-4

Phenylpropglycine

0-4

Phenylpyruvic

0-4

Pyroglutamic

0-70

p-OH Phenylacetic

0-325

p-OH Phenyllactic

0-15

p-OH Phenylpyruvic

0-28

Propionylglycine

0-4

Pyruvic

0-40

Sebacic

0-4

Suberic

0-19

Suberylglycine

0-4

Succinic

0-120

Tiglyglycine

0-10

An interpretation of report can be requested.

 

This is a semi-quantitative method and concentrations reported are approximate and have not been validated.

 

Use:Detection and quantitation of organic acids excreted in the urine at abnormal concentrations for diagnosis of organic acidemias, such as propionic, methylmalonic, isovolaric and glutaric acidemia, maple syrup urine disease, tyrosinemia, multiple carboxylase deficiency and phenylketonuria.


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