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29881: Amino Acid Analysis, LC/MS, CSF Print View
Date of Birth      
Aspartic Acid LCMS  < 3 months: < 4
< 11 years: < 1
>= 11 years: < 3 
umol/L 
Glutamic Acid LCMS  < 3 months: 1 - 9
< 24 months: < 6
< 11 years: < 12
>= 11 years: 1 - 13 
umol/L 
Hydroxyproline LCMS  < 3 months: 1 - 4
< 24 months: < 3
< 11 years: < 1
>= 11 years: < 3 
umol/L 
Serine LCMS  < 3 months: 30 - 88
< 24 months: 22 - 61
< 11 years: 15 - 62
>= 11 years: 9 - 41 
umol/L 
Asparagine LCMS  < 3 months: < 28
< 24 months: < 14
< 11 years: < 26
>= 11 years: < 25 
umol/L 
Alpha-Amino Adipic Acid LCMS  < 1  umol/L 
Glycine LCMS  < 3 months: 3 - 26
< 24 months: < 13
< 11 years: < 14
>= 11 years: < 11 
umol/L 
Glutamine LCMS  < 3 months: 525 - 1583
< 24 months: 386 - 742
< 11 years: 377 - 1738
>= 11 years: 361 - 1175 
umol/L 
Sarcosine LCMS  < 1  umol/L 
Beta-Alanine LCMS  < 1  umol/L 
Taurine LCMS  < 3 months: < 19
< 24 months: < 9
< 11 years: 1 - 8
>= 11 years: 1 - 8 
umol/L 
Histidine LCMS  < 3 months: 8 - 32
< 24 months: 4 - 25
< 11 years: 7 - 25
>= 11 years: 7 - 22 
umol/L 
Citrulline LCMS  < 3 months: 1 - 4
< 24 months: < 4
< 11 years: 1 - 2
>= 11 years: < 3 
umol/L 
Arginine LCMS  < 3 months: 2 - 27
< 24 months: 7 - 32
< 11 years: 9 - 31
>= 11 years: 10 - 32 
umol/L 
Threonine LCMS  < 3 months: 23 - 104
< 24 months: 10 - 55
< 11 years: 8 - 85
>= 11 years: 12 - 64 
umol/L 
Alanine LCMS  < 3 months: 13 - 50
< 24 months: 8 - 48
< 11 years: 5 - 62
>= 11 years: 1 - 107 
umol/L 
Gamma-Amino Butyric Acid LCMS  < 24 months: < 1
< 11 years: < 3
>= 11 years: < 4 
umol/L 
Beta-Amino Isobutyric Acid LCMS  < 3  umol/L 
Proline LCMS  < 3 months: < 5
< 24 months: < 3
< 11 years: < 3
>= 11 years: < 7 
umol/L 
Alpha-Amino Butyric Acid LCMS  < 24 months: < 7
>= 24 months: 1 - 11 
umol/L 
Tyrosine LCMS  < 3 months: 9 - 41
< 24 months: 5 - 20
< 11 years: 5 - 32
>= 11 years: 5 - 18 
umol/L 
Valine LCMS  < 3 months: 11 - 31
< 24 months: 8 - 19
< 11 years: 2 - 37
>= 11 years: 7 - 42 
umol/L 
Methionine LCMS  < 3 months: 2 - 14
< 24 months: 1 - 7
< 11 years: < 10
>= 11 years: 1 - 8 
umol/L 
Isoleucine LCMS  < 3 months: 3 - 11
< 24 months: 3 - 7
< 11 years: 2 - 13
>= 11 years: 3 - 10 
umol/L 
Leucine LCMS  < 3 months: 7 - 22
< 24 months: 7 - 12
< 11 years: 8 - 27
>= 11 years: 9 - 32 
umol/L 
Homocystine LCMS  < 24 months: < 1
< 11 years: < 4
>= 11 years: < 3 
umol/L 
Phenylalanine LCMS  < 3 months: 4 - 31
< 24 months: 4 - 14
< 11 years: < 26
>= 11 years: 6 - 31 
umol/L 
Tryptophan LCMS  < 3 months: < 7
< 24 months: < 9
< 11 years: 1 - 5
>= 11 years: < 10 
umol/L 
Ornithine LCMS  < 3 months: < 27
< 24 months: < 6
< 11 years: < 6
>= 11 years: < 15 
umol/L 
Lysine LCMS  < 3 months: 6 - 38
< 24 months: 3 - 29
< 11 years: 9 - 58
>= 11 years: 19 - 60 
umol/L 

PRIMARY
1 CSF 1 (0.25) mL   Refrigerated - 7 Day(s)/Frozen - 30 Day(s)  
ALTERNATE

Amino Acid analysis is necessary for the diagnosis of a variety of inborn errors of metabolism. These include, but are not limited to, phenylketonuria, tyrosinemia, citrullinemia, non-ketotic hyperglycinemia, maple syrup urine disease, and homocystinuria. The assay is also key for the continued monitoring of treatment plans for these disorders and useful for assessing nutritional status of patients. Our methodology is highly accurate at very low levels as well as at elevated levels.

Patient age is required for correct reference range. Freeze CSF
below -20 degrees celcius.

Setup Schedule
Monday-Friday

Reported (Analytical Time)
5 days

CPT Code
82139

The CPT codes provided are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

Notes
*** For New York patient testing, use test code 19768.*** Reject Criteria: Received room temperature; gross hemolysis






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