Test Overview
Test Methodology

LCMS/MS

Test Usage

Diagnosis of suspected amino acid and urea cycle disorders.

Reference Range *

Interpretive report provided.

Test Details
Days Set Up
Tuesday, Wednesday, Friday
Analytic Time

5 - 10 days; contact MLabs Client Services Center or Pediatric Geneticist on Call if assay is needed on an urgent basis.

Soft Order Code
UAA
MiChart Code
Amino Acids, Urine, Quantitative (MMGL)
Synonyms
  • Alanine
  • Arginine
  • Asparagine
  • Aspartic Acid
  • Citrulline
  • Cystine
  • Glutamic Acid
  • Glutamine
  • Glycine
  • Histidine
  • Hydroxyproline
  • Isoleucine
  • Leucine
  • Lysine
  • Methionine
  • Ornithine
  • Phenylalanine
  • Proline
  • Serine
  • Threonine
  • Tryptophan
  • Tyrosine
  • Valine
  • L-alloisoleucine
  • Phosphoethanolamine
  • Homocystine
  • Argininosuccinic Acid
  • Hydroxylysine
  • UAA
  • Urine Amino Acids
  • UAAS
  • Urine Amino Acids Shadow
  • PGLABEL
  • Generic Peds Genetics Test
  • BIOCH GEN REPORT
  • BIOCHEMICAL GENETICS REPORT
  • Beta-Alanine
  • Gamma-Aminobutyric Acid
  • Glutamate
  • Ethanolamine
  • Sarcosine
  • Alpha Aminobutyric
  • Beta Aminoisobutyric
  • Taurine
  • Carnosine
  • Alpha Aminoadipic
Laboratory
MMGL
Section
MMGL Biochemical Genetics
STAT Availability

STAT analysis must be approved by Pediatric Geneticist on Call.

STAT Limitations

8 Hours post approval for STAT result.

Specimen Requirements
Collection

Collect random urine specimen and freeze. Freeze each specimen immediately after collection if multiple collections are needed to reach the minimum volume. Include the patient’s family history, clinical condition (asymptomatic or acute), diet, and a list of current medications with the test requisition.

Rejection Criteria
Significant volume of blood in urine sample.
Normal Volume
10 mL urine
Minimum Volume
2 mL urine
Storage Temperature
Ambient,(A) less than 4 hours.
Refrigerated,(R)12 hours.
Frozen,(F) 2 weeks
Additional Information

Test may include medical geneticist interpretation of results at an additional charge. By ordering this test, the clinician acknowledges that a physician interpretation will be performed and billed as a separate additional charge if indicated.

Billing
CPT Code
82139
Fee Code
23785