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HelpTest Code LAB9037 Manganese, 24 Hour, Urine
Additional Codes
MNU
Useful For
Monitoring manganese exposure using 24 hour urine collections
Nutritional monitoring
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
UrineNecessary Information
24-Hour volume (in milliliters) is required.
Specimen Required
Patient Preparation: High concentrations of gadolinium and iodine are known to interfere with most metal tests. If gadolinium- or iodine-containing contrast media has been administered, a specimen should not be collected for 96 hours.
Supplies: Urine Tubes, 10 mL (T068)
Collection Container/Tube: Clean, plastic urine container with no metal cap or glued insert
Submission Container/Tube: Plastic, 10-mL urine tube or clean, plastic aliquot container with no metal cap or glued insert
Specimen Volume: 0.3 mL
Collection Instructions:
1. Collect urine for 24 hours.
2. Refrigerate specimen within 4 hours of completion of 24-hour collection.
3. See Metals Analysis Specimen Collection and Transport for complete instructions.
Additional Information: See Urine Preservatives-Collection and Transportation for 24-Hour Urine Specimens for multiple collections.
Specimen Minimum Volume
0.2 mL
Specimen Stability Information
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Urine | Refrigerated (preferred) | 28 days | |
| Frozen | 28 days | ||
| Ambient | 7 days |
Special Instructions
Reference Values
0-17 years: Not established
≥18 years: <4.0 mcg/24 hr
Day(s) Performed
Tuesday
CPT Code Information
83785
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| MNU | Manganese, 24 Hr, U | 8203-2 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 8080 | Manganese, 24 Hr, U | 8203-2 |
| TM26 | Collection Duration | 13362-9 |
| VL24 | Urine Volume | 3167-4 |
Interpretation
Manganese (Mn) in urine represents the excretion of excess Mn from the body. Elevated levels may indicate occupational exposure or excessive nutritional intake.
Specimens from normal individuals have very low levels of Mn.
Method Description
The metal of interest is analyzed by triple-quadrupole inductively coupled plasma mass spectrometry.(Unpublished Mayo method)
Report Available
2 to 8 daysSpecimen Retention Time
14 daysReject Due To
All specimens will be evaluated at Mayo Clinic Laboratories for test suitability.Method Name
Triple-Quadrupole Inductively Coupled Plasma-Mass Spectrometry (ICP-MS/MS)