Test Details
Mnemonic
UMMAG
Ordering Code
3719900
CPT-4 Code(s)
83921, 82570
Specimen Information
Collect
Random urine
Specimen Preparation
Mix well and send 1.7 mL urine with no preservatives in a screw capped plastic urine container.
Alternate Specimen
24-hour urine, catheterized urine, first void clean catch urine, random clean catch urine
Minimum Volume
0.6 mL
Transport Temperature
Refrigerated
Rejection Criteria
Specimens stored at room temperature, acidified urine
Stability
Room temperature: 4 days
Refrigerated: 12 days
Frozen (-20°C): 30 days
Frozen (-70°C): 90 days
Refrigerated: 12 days
Frozen (-20°C): 30 days
Frozen (-70°C): 90 days
Methodology
Chromatography/Mass Spectrometry
Reference Range
Result Name
Methylmalonic Acid, GCMSMS, U:
0.3-2.2 mol/mol creat
Creatinine, Random urine:
Age Reference range
0-6 mnths 0.18-2.48 mmol/L
7-11 mnths 0.18-2.74 mmol/L
1-2 years 0.18-9.72 mmol/L
3-8 years 0.18-11.49 mmol/L
9-12 years 0.18-14.14 mmol/L
>12 years 1.77-23.31 mmol/L
Methylmalonic Acid, GCMSMS, U:
0.3-2.2 mol/mol creat
Creatinine, Random urine:
Age Reference range
0-6 mnths 0.18-2.48 mmol/L
7-11 mnths 0.18-2.74 mmol/L
1-2 years 0.18-9.72 mmol/L
3-8 years 0.18-11.49 mmol/L
9-12 years 0.18-14.14 mmol/L
>12 years 1.77-23.31 mmol/L
Performing Laboratory
Quest SJC
New York DOH Approval Status
Yes