Test Overview
Test Methodology

LCMS/MS

Test Usage

Assessment of metabolic defects resulting in abnormal amino acid metabolism.

Reference Range *

Interpretive report provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

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
PAA
MiChart Code
Amino Acids, Plasma (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
  • PAA
  • L-alloisoleucine
  • PLASMA AMINO ACIDS
  • Phosphoethanolamine
  • Homocystine
  • Argininosuccinic Acid
  • Hydroxylysine
  • PGLABEL
  • Generic Peds Genetics Test
  • BIOCH GEN REPORT
  • BIOCHEMICAL GENETICS REPORT
  • Plasma Amino Acids Shadow
  • PAAS
  • 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 Instructions

Collect specimen in a green top tube. Do not use Microtainer® tubes or tubes containing gel; these are not acceptable. Centrifuge, aliquot plasma into plastic vial, and freeze. Whole blood specimens may be stored refrigerated up to 24 hours prior to aliquotting. Include the patient's family history, clinical condition (asymptomatic or acute), diet, and a list of current medications with the test requisition.

Rejection Criteria
Grossly hemolysed samples. Microtainer® tubes or tubes containing gel are not acceptable.
Fasting Specimen
Glucose less than 40 preferable.
Normal Volume
3 mL plasma
Minimum Volume
1 mL plasma
Storage Temperature
(A)-Ambient;less than 2 hours
(R)-Refrigerated; less than 24 hours
(F)-Frozen; 1 week
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
23790
LOINC
35083-5
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