Creatinine, urine; methylmalonic acid, urine
4 - 9 days
Turnaround time is defined as the usual number of days from the date of pickup of a specimen for testing to when the result is released to the ordering provider. In some cases, additional time should be allowed for additional confirmatory or additional reflex tests. Testing schedules may vary.
Urine (random)
5 mL
0.6 mL
Plastic urine container, no preservative
Room temperature
Temperature
Period
14 days
Refrigerated
Frozen
19 days
Freeze/thaw cycles
Stable x3
Diagnose cobalamin (vitamin B12) deficiency
This test was developed and its performance characteristics determined by LabCorp. It has not been cleared or approved by the Food and Drug Administration.
Liquid chromatography/tandem mass spectrometry (LC/MS-MS)
0.4-2.5 µmol/mmol crt
