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HelpTest Code LAB6762 Methylmalonic Acid, Urine
Aliases
MMA, Urine
Purpose/Principle
Methylmalonic acidemias are characterized by the accumulation and excretion of methylmalonic acid. This method measures the amount of methylmalonic acid present using stable isotope dilution methodology.
Performing Section
Biochemical Genetics
Specimen Type
Urine:
Sterile Container
Specimen Volume
Preferred: 4.0 mL
Minimum: 1.5 mL
Special Collection Notes
May squeeze from cotton balls placed in diaper.
No preservatives
Processing Instructions
Store and ship sample frozen on dry ice.
Temperature
Frozen (dry ice)
Sample Stability
Refrigerated: 24 hours
Frozen @-20 Celsius: 30 days
Frozen @ -80 Celsius: Indefinitely
TAT
7 days
Test/Batch Schedule
Tue and Thur
Test Components
Methylmalonic Acid, Urine
Reference Range
0.0-4.6 mcg/mg UCr
CPT
83921