Methodology
Gas Chromatography/Tandem Mass Spectrometry (GC/MS/MS)
Synonyms
MMA
Specimen Type
Urine
Performing Lab
Quest Diagnostics San Juan Capistrano
Epic ID
LAB01281
Lab Test Days
Tuesday and Friday
Standard TAT
6-10 Days
Collection Information
Specimen Required
1.7 mL Urine
Container Type
Sterile Container
Collection Instructions
Do not use preservative. 24-Hour urine, random clean-catch urine, catheterized urine, and first void clean-catch urine is acceptable.
Processing Information - Lab Use Only
Transport Temperature
Refrigerate-OK/Frozen-OK
Specimen Stability
Room Temp: 4 Days; Refrigerated: 12 Days; Frozen: 30 Days
Rejection Criteria
Thawed catheterized urine or First void clean catch urine or Random clean catch urine or 24 Hour urine; Samples stored at Room temp; Acidified urine
Test Volume Required
1.7 mL Urine
Minimum Test Volume
0.6 mL Urine
Processing Instructions
Do not use preservatives.
Included Tests
Methylmalonic Acid and Creatinine
CPT Codes
82570, 83921
Revised
02-08-15
Initials
SL