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Test Code URZNR Zinc/Creatinine Ratio, Random, Urine

Reporting Name

Zinc/Creat Ratio, Random, U

Useful For

Identifying the cause of abnormal serum zinc concentrations using a random urine specimen

Profile Information

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

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Specimen Type

Urine


Specimen Required


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

Supplies: Urine Tubes, 10 mL (T068)

Collection Container/Tube: Clean, plastic urine collection container with no metal cap or glued insert

Submission Container/Tube: Plastic urine tube 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.


Specimen Minimum Volume

0.7 mL

Specimen Stability Information

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

Reference Values

0-17 years: not established

≥18 years: 89-910 mcg/g Creatinine

Day(s) and Time(s) Performed

Monday; Continuously

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information

84630 Zinc Concentration

82570 Creatinine Concentration

LOINC Code Information

Test ID Test Order Name Order LOINC Value
ZNCRU Zinc/Creat Ratio, Random, U 13473-4

 

Result ID Test Result Name Result LOINC Value
CDCR Creatinine Conc 2161-8
32876 Zinc/Creat Ratio, U 13473-4

Reject Due To

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

Method Name

ZNCR: Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

CDCR: Enzymatic Colorimetric Assay

Secondary ID

60527