Test Overview
Test Methodology

LCMS/MS

Test Usage

Assessment of metabolic defects resulting in abnormal amino acid metabolism.

Reference Range *

Interpretive report provided.

Test Details
Days Set Up
Tuesday, Wednesday, Thursday
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
CAA
MiChart Code
Amino Acids, Quantitative, CSF (MMGL)
Synonyms
  • Beta-Alanine
  • Alanine
  • Arginine
  • Aspartic Acid
  • Cystine
  • Glutamine
  • Histidine
  • Asparagine
  • Citrulline
  • Glutamic Acid
  • Glycine
  • Hydroxyproline
  • Phosphoethanolamine
  • Hydroxylysine
  • Homocystine
  • Argininosuccinic Acid
  • Methionine
  • Phenylalanine
  • Serine
  • Threonine
  • Tyrosine
  • L-alloisoleucine
  • Isoleucine
  • Lysine
  • Ornithine
  • Proline
  • Tryptophan
  • Valine
  • Leucine
  • CAA
  • Amino Acids, CSF-QN
  • Gamma-Aminobutyric Acid
  • PGLABEL
  • Generic Peds Genetics Test
  • BIOCH GEN REPORT
  • BIOCHEMICAL GENETICS REPORT
  • CAAS
  • Amino Acids, CSF-QN Shadow
  • Glutamate
  • Carnosine
  • Alpha Aminoadipic
  • Taurine
  • Beta Aminoisobutyric
  • Alpha Aminobutyric
  • Ethanolamine
  • Sarcosine
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 Instructions

Collect CSF in a sterile tube. If blood is present, centrifuge and aliquot CSF into a plastic vial and freeze within 1 hour of collection. If a centrifuge is not available, refrigerate specimen and send to laboratory within 24 hours of collection. Include the patient's family history, clinical condition (asymptomatic or acute), diet, and a list of current medications with the test requisition.

Normal Volume
2 mL CSF
Minimum Volume
1 mL CSF
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
23800
LOINC
35507-3