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Test Code MNCRU Manganese/Creatinine Ratio, Random, Urine

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Monitoring manganese exposure


Nutritional monitoring


Clinical trials

Method Name

MNCR: Dynamic Reaction Cell-Inductively Coupled Plasma-Mass Spectrometry (DRC-ICP-MS)

CDCR: Enzymatic Colorimetric Assay

Specimen Required

Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metals tests. If either gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.

Collection Container/Tube: Clean, plastic urine collection container

Submission Container/Tube: Plastic, 10-mL urine tube (T068) or clean, plastic aliquot container with no metal cap or glued insert

Specimen Volume: 3 mL

Collection Instructions:

1. Collect a random urine specimen.

2. See Trace Metals Analysis Specimen Collection and Transport in Special Instructions for complete instructions.

Reporting Name

Manganese/Creat Ratio, Random, U

Specimen Type


Specimen Minimum Volume

0.8 mL

Specimen Stability Information

Specimen Type Temperature Time Special Container
Urine Refrigerated (preferred) 28 days
  Frozen  28 days
  Ambient  7 days

Reject Due To

All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.

Reference Values

<4.0 mcg/g creatinine

Reference values have not been established for patients that are <18 years of age.

Day(s) and Time(s) Performed

Tuesday, Friday; 8 a.m.

Test Classification

See Individual Test IDs

CPT Code Information

83785 Manganese Concentration

82570 Creatinine Concentration

LOINC Code Information

Test ID Test Order Name Order LOINC Value
MNCRU Manganese/Creat Ratio, Random, U 27367-2


Result ID Test Result Name Result LOINC Value
CDCR Creatinine Conc 2161-8
32867 Manganese/Creat Ratio, U 27367-2

Profile Information

Test ID Reporting Name Available Separately Always Performed
MNCR Manganese/Creat Ratio, U No Yes
CDCR Creatinine Conc No Yes