Clinics and Departments

Laboratory Services

Lab Dept:

Other Fluids

Test Name:

AMINO ACID, CSF

General Information

Lab Order Codes:

AASF

Synonyms:

N/A

CPT Codes:

82139 – Amino acids; 6 or more, quantitative, each specimen

Test Includes:

Alanine, B-alanine, A-aminoadipic acid, B-aminobutyric acid, anserine, arginine, asparagine, aspartic acid, carnosine, citrulline, cystine, cystathionine, glutamic acid, glutamine, glycine, histidine, homocystine, hydroxylysine, hydroxyproline, isoleucine, leucine, lysine, methionine, 1-methylhistidine, 3-methylhistidine, ornithine, phenylalanine, proline, sarcosine, serine, taurine, threonine, tyrosine, valine.

Logistics

Test Indications:

To monitor glutamine for hyperammonemia, glycine to diagnose nonketotic hyperglycinemia, or other amino acids in cerebrospinal fluid.

Lab Testing Sections:

Chemistry – Sendouts (Fairview Test: CAA)

Referred to:

Fairview-University Diagnostic Laboratories, Biochemical Genetics

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

1 - 3 days, test performed Monday - Friday

Special Instructions:

Provide clinical history

Specimen

Specimen Type:

CSF

Container:

Screw capped, sterile vial

Draw Volume:

0.5 mL (Minimum: 0.3 mL) CSF

Processed Volume:

Same as Draw Volume

Collection:

Routine CSF collection

Special Processing:

Lab Staff: Centrifuge specimen and aliquot 0.5 mL CSF, 0.3 mL minimum in a plastic, screw capped vial. Store in freezer. Ship frozen. Forward promptly.

Patient Preparation:

None

Sample Rejection:

Mislabeled or unlabeled specimens

Interpretive

Reference Range:

An interpretation of the report can be requested.

Amino Acid

umol/dL

Alanine

1.3 - 3.7

Arginine

0.6 - 2.9

Aspartic acid

0.2 - 0.8

Glutamic acid

0 - 11.7

Glutamine

0 - 2 weeks

46.5 - 86.2

2 weeks - 6 months

40.4 - 77.3

6 – 12 months

34.2 - 63.0

12 - 30 months

24.6 - 49.3

>30 months

16.1 - 53.3

Glycine

0.2 - 2.0

Histidine

0.2 - 3.1

Isoleucine

0.2 - 1.5

Leucine

0.6 - 1.8

Lysine

1.3 - 4.2

Methionine

0.1 - 0.4

Ornithine

0.3 - 0.8

Phenylalanine

0.2 - 1.0

Proline

0 - 0.4

Serine

1.3 - 7.0

Taurine

0.2 - 1.4

Threonine

1.0 - 5.1

Tyrosine

0.1 - 1.1

Valine

0.3 - 2.6

Critical Values:

N/A

Limitations:

N/A

Methodology:

High performance ion exchange liquid chromatography

References:

Fairview University Laboratory Web Page August 2012



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