ORGANIC ACID, PLASMA

Components
Organic Acids, Urine is the preferred test when screening for inherited disorders of metabolism. This plasma test is not as sensitive and will only detect the organic acids listed on the report.

Specimen Required
Draw blood in a green sodium or lithium heparin tube. Centrifuge and separate plasma from cells within 1 hour of collection. Send 3.0 mL plasma (2.0 mL minimum) frozen in a screw-capped plastic vial. CRITICAL FROZEN.

Methodology
Quantitative Gas Chromatography/Mass Spectrometry

Stability
Room Temperature: Unacceptable; Refrigerated: Unacceptable; Frozen: 1 month

Reference Range
By report

Performed
Tuesday

Turnaround Time5-17 days
Test CodeORGAP
CPT-4 Code (s)
83918
LOINC Codes
Organic Acids, Plasma Interp   33475-5  
Lactic Acid   2524-7  
Pyruvic Acid   32338-6  
Succinic Acid   35871-3  
3-OH Butyric Acid   6873-4  
Acetoacetic Acid   35867-1  
2-Keto-3-methylvaleric Acid   35869-7  
2-ketoisocaproic Acid   35870-5  
2-Ketoisovaleric Acid   35868-9  
Glutaric Acid, Plasma   35133-8  

Warde
Medical
Laboratory