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Test Mnemonic URLEAD/LEAD24 Lead, 24 Hour, Urine

Additional Codes

Mayo Test ID
PBU

Reporting Name

Lead, 24 Hr, U

Useful For

Detecting clinically significant lead exposure

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Urine


Specimen Required


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

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

Specimen Volume: 10 mL

Collection Instructions:

1. Collect urine for 24 hours.

2. Refrigerate specimen within 4 hours of completion of 24-hour collection.

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

Additional Information:

1. 24-Hour volume is required.

2. See Urine Preservatives in Special Instructions for multiple collections.

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 Minimum Volume

2 mL

Specimen Stability Information

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

Reference Values

0-4 mcg/specimen

Reference values apply to all ages.

Day(s) and Time(s) Performed

Monday through Friday; 3 p.m.-9 p.m.; Saturday; 8 a.m.-3 p.m.; 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

83655

LOINC Code Information

Test ID Test Order Name Order LOINC Value
PBU Lead, 24 Hr, U In Process

 

Result ID Test Result Name Result LOINC Value
31085 Lead, 24 Hr, U 5677-0
TM83 Collection Duration 13362-9
VL84 Urine Volume 3167-4
866 Pb Concentration 20625-0

Method Name

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Urine Preservative Collection Options

Ambient

Yes

Refrigerated

Preferred

Frozen

Yes

6N HCl

Yes

50% Acetic Acid

Yes

Na2CO3

No

Toluene

Yes

6N HNO3

Yes

Boric Acid

No

Thymol

No