Specimen:

Urine

Collection Medium:

Minimum:

Adult minimum:  5 ml random urine

Analytic Time:

week - 10 days

Reference Range:

                Control Values
   Results Expressed as ug/mg Creatinine

                                   Range
Ethylmalonic Acid                0.5-20.2
2-Methylsuccinic Acid            0.4-13.8
Glutaric Acid                    0.6-15.2
Isobutyrylglycine                0.0-11.0
n-Butyrylglycine                 0.1- 2.1
2-Methylbutyrylglycine           0.3- 7.5
Isovalerylglycine                0.3-14.3
n-Hexanoylglycine                0.2- 1.9
n-Octanoylglycine                0.1- 2.1
3-Phenylpropionylglycine         0.0- 1.1
Suberylglycine                   0.0-11.0
trans-Cinnamoylglycine           0.2-14.7
Dodecanedioic Acid (12:0)        0.0- 1.1
Tetradecanedioic Acid (14:0)     0.0- 1.0
Hexadecanedioic Acid (16:0)      0.0- 1.0

Comments:

Freeze urine as soon as possible after collection.  Avoid dilute urine 
when possible.  Clinical information is needed for appropriate 
interpretation.  Additional required information includes age, gender, 
diet (e.g., TPN therapy), drug therapy, and family history.

Methodology:

Gas Chromatography-Mass Spectrometry (GC-MS):  Stable Isotope Dilution 
Analysis

CPT Code:

82544