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 Field Name  Data Description
Test Name  Lead Urine 24 Hr
Code  Lead Urine 24 Hr Studies., U24 Lead.
CPT Code  83655, 82570
Last Modified  4/24/2018 12:26:00 PM
Test Name  U24 Lead.
Synonyms  Lead U, Umetal, PB, Routin, Urine, Creatinine, Lead:Creatinine Ratio; Urine (24-Hour)
Patient Preparation  
Spec. Requirements  Urine (24-hour or Random)
Tube  Plastic urine container, no preservative
Collection Volume  5.0 mL
Storage  Ambient,Refrigerated, or Frozen 14 days
Routine TAT  
Days Test Performed  
Performed by BHS  None
See Availability  
Reference Lab  LabCorp of America
Reference Lab Code  007633 Lead, Urine
Clinical Use  Monitor exposure to lead or lead chelation therapy Lead poisoning through chronic exposure is characterized by gastrointestinal disturbance, anemia, insomnia, weight loss, motor weakness, muscle paralysis, and neuropathy. Ingestion of large quantities may produce death.
Reference Range  
Critical Value  
Reference Range  
Critical Value  
Testing Sample Type  Urine (24-Hr. or Random)
Min Lab Testing Volume  2.5 mL
Special Handling  If the specimen is a 24-hour collection, instruct the patient to void at 8 AM and discard the specimen. Then collect all urine including the final specimen voided at the end of the 24-hour collection period (ie, 8 AM the next morning). Screw the lid on securely. Collect without preservatives. Mix well. Sampling time is not critical for industrial monitoring. Measure and record volume on the requisition and container prior to aliquotting. Request form MUST state total volume collected in 24-hour, if applicable. No preservatives. Preservatives used for routine analysis may contain mercuric oxide (ie, Stabilur), which interferes with all metal testing. If both urinalysis and metal testing are ordered, please submit a separate urine specimen (containing no additive) for the metal testing.
Lab Notes  Test Includes:Lead, urine; creatinine, urine; lead:creatinine ratio; lead, urine (24-hour)
Methodology  Inductively Coupled Plasma/Mass Spectrometry

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