Amino Acids, Timed Urine


Sunquest Code:UAAT; UAA1T; UAA25T  
Epic Code:LAB3804Epic Name:Amino Acids Timed Urine
Order Instructions:If a single amino acid is requested, order with code UAA1T. If 2-5 amino acids are requested, order UAA25T. Specify amino acids required. If panel is requested, order UAAT.
Synonyms:AA; UAA1T; UAA25T; UAAT; Alanine; B-alanine; A-aminoadipic Acid; B-aminoisobutyric Acid; Anserine; Arginine; Argininosuccinic Acid; Asparagine; Aspartic Acid; Carnosine; Citrulline; Half-cystine; Cystathionine; Glutamic Acid; Glutamine; Glycine; Histidine; Homocystine; Hydroxylysine; Isoleucine; Leucine; Lysine; Methionine; 1-methylhistidine; 3-methylhistidine; Ornithinine; Phenylalanine; Proline; Sarcosine; Serine; Taurine; Threonine; Tyrosine; Valine; Hydroxyproline
Methodology:High performance ion exchange liquid chromatography
CPT Code:82131, 82136, 82139
Test Includes:Alanine, B-alanine, A-aminoadipic acid, B-aminoisobutyric acid, anserine, arginine, argininosuccinic acid, asparagine, aspartic acid, carnosine, citrulline, half-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, and urine creatinine.
Turnaround Time:Performed Mon-Fri; results are reported the next day.
Special Instructions:Provide clinical history and specify amino acid(s) desired on request form. If >10% of volume lost during 24 hour collection, test will be reported as a random collection.
Associated Links:

Urine Collection Procedure



Collection Instructions

Specimen:Urine, 24 hour collection preferred
Optimal Volume:Submit entire collection; analysis requires 1 mL minimum


Processing and Shipping

Specimen Processing:Mix collection well before aliquot is taken. Aliquot 5 mL, 1 mL minimum. Record total volume and duration. 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.
Shipping Instructions:Ship on dry ice.
Test Performed at or Referral Lab Biochemical Genetics  (UMMC-East Bank)


Interpretive

Critical Range:
Reference Range:

An interpretation of the report can be ordered/requested.

 

Urine, 24-Hour Collection (umol/24 hours)

 

0-3 mo

4 mo-11 y

12 y and geater

Alanine

0-110

64-655

60-710

A-aminoadipic acid

0-20

0-80

20-150

Arginine

0-10

0-35

10-45

Asparagine

0-55

0-205

0-286

Aspartic acid

0-15

10-65

10-60

B-Aminoisobutyric acid

0-370

46-680

50-650

Carnosine

0-65

0-620

0-850

Citrulline

0-10

0-40

0-54

Cystathionine

0-10

0-25

0-60

Half-Cystine

0-40

41-135

30-243

Ethanolamine

0-105

59-270

0-800

Glutamine

0-150

0-480

0-900

Glutamic Acid

0-65

12-60

0-80

Glycine

0-745

152-1525

710-4790

Histidine

0-185

99-1200

130-2125

Hydroxyproline

0-185

0-100

0-0

Isoleucine

0-40

24-45

40-62

Leucine

0-10

21-65

10-100

Lysine

0-65

10-315

0-400

Methionine

0-40

20-110

20-142

1-Methylhistidine

0-5

56-420

180-1830

3-Methylhistidine

0-25

0-220

0-600

Ornithine

0-15

0-20

0-20

Phenylalanine

0-10

24-100

40-120

Proline

0-110

0-60

0-0

Serine

0-155

26-475

210-730

Taurine

0-300

18-1630

220-2235

Threonine

0-70

26-260

420-555

Tyrosine

0-40

40-205

40-250

Valine

0-10

15-60

0-56

 

 

Use:Abnormalities in urine amino acid concentrations may reflect elevations in the plasma. Urine cystine is diagnostic for cystinuria.


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