Sign in →

Test Code LEAD24 Lead, 24 Hour, Urine

Performing Laboratory

Quest Diagnostics Nichols Institute, Chantilly, VA


Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)


This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by the U.S. Food and Drug Administration. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.

Reference Values

< 80 mcg/L

Test Classification and CPT Coding

81050 - urine timed measurement

83655 - lead

Physician Office Specimen Requirements

Container/Tube: 24 Hour acid- washed or metal free urine container

Specimen: 7 mL(3 mL min) aliquot of a well-mixed 24 hour urine collected in an acid-washed or metal-free container.

Transport Temperature: Refrigerated


Stability: 5 Days Refrigerated

                 14 Days Frozen


Note:  Starting and ending times of collection are required on request form for processing.

Day(s) and Time(s) Performed

Monday - Saturday


1 -2 Day TAT

Used For

Elevated urinary lead concentration is indicative of chronic lead toxicity. Urinary lead concentrations may be used to monitor detoxification therapy.

Computer Interface Code

PDM #  5901466