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22698 Mercury, Urine 24 Hour (HGU)

Mercury, Urine 24 Hour (HGU)
Test Code: MERCUSO
Synonyms/Keywords
​Ref Lab Code: 8592, Hg (Mercury), Mercury (Hg)
Useful For
​Detecting mercury toxicity
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​Urine Clean, plastic urine container with no metal cap or glued insert​ ​ 10 mL​ 2 mL​ ​
Collection Processing Instructions
1. Collect urine for 24 hours.
2. No preservative.
3. See Metals Analysis-Collection and Transport in Special Instructions for complete instructions.
Trace Metals Analysis - Specimen Collection and Transport
4. Refrigerate specimen within 4 hours of completion of 24-hour collection.
5. Submit sample in a plastic, 10-mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert.
 
Additional Information:
1. 24-Hour volume is required.
2. See Urine Preservatives in Special Instructions for multiple collections.
Urine Preservative Cross-Reference Information
3. 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.​
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Refrigerated (preferred)​ 7 days​
​ Frozen ​ 7 days​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Medical Laboratories​
 Monday through Saturday​
1 day​
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)​
Reference Lab
Mayo Clinic Laboratories
Reference Range Information
​0-15 years: Not established.
>= 16 years: 0-9 mcg/specimen
Toxic concentration: >50 mcg/specimen
The concentration at which toxicity is expressed is widely variable between patients. 50 mcg/specimen is the lowest concentration at which toxicity is usually apparent.
Interpretation
​Daily urine excretion of mercury >50 mcg/day indicates significant exposure (per World Health Organization standard).
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​83825 ​ ​ ​ ​
Synonyms/Keywords
​Ref Lab Code: 8592, Hg (Mercury), Mercury (Hg)
Ordering Applications
Ordering Application Description
​Centricity ​Mercury-24hr
​Cerner ​Mercury Level 24 Hour Urine (8592)
​COM ​Mercury, 24 Hr Urine
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)		 Pediatric Minimum Volume
(no repeat)
​Urine Clean, plastic urine container with no metal cap or glued insert​ ​ 10 mL​ 2 mL​ ​
Collection Processing
1. Collect urine for 24 hours.
2. No preservative.
3. See Metals Analysis-Collection and Transport in Special Instructions for complete instructions.
Trace Metals Analysis - Specimen Collection and Transport
4. Refrigerate specimen within 4 hours of completion of 24-hour collection.
5. Submit sample in a plastic, 10-mL urine tube or a clean, plastic aliquot container with no metal cap or glued insert.
 
Additional Information:
1. 24-Hour volume is required.
2. See Urine Preservatives in Special Instructions for multiple collections.
Urine Preservative Cross-Reference Information
3. 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.​
Specimen Stability Information
Specimen Type Temperature Time
Urine​ Refrigerated (preferred)​ 7 days​
​ Frozen ​ 7 days​
Useful For
​Detecting mercury toxicity
Reference Range Information
​0-15 years: Not established.
>= 16 years: 0-9 mcg/specimen
Toxic concentration: >50 mcg/specimen
The concentration at which toxicity is expressed is widely variable between patients. 50 mcg/specimen is the lowest concentration at which toxicity is usually apparent.
Interpretation
​Daily urine excretion of mercury >50 mcg/day indicates significant exposure (per World Health Organization standard).
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Medical Laboratories​
 Monday through Saturday​
1 day​
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)​
Reference Lab
Mayo Clinic Laboratories
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)		 Quantity Description Comments
​83825 ​ ​ ​ ​
For most current information refer to the Marshfield Laboratory online reference manual.