Test Overview
Test Methodology

Inductively Coupled Plasma/Mass Spectrophotometry (ICP/MS)

Test Usage

Evaluate lead exposure or toxicity. The CDC states that whole blood lead is the best test for detection of lead exposure. Measurement of urine excretion rates before or after chelation therapy has been used as an indicator of lead exposure; however, blood lead analysis has the strongest correlation with toxicity.

Reference Range *

> or = 18 years: <2 mcg/24 hour

Test Details
Days Set Up
Monday - Saturday
Analytic Time

1 - 3 days

Soft Order Code
MPBU
MiChart Code
Lead, urine, 24 hour
Synonyms
  • Pb, Urine
  • LEAD, URINE
  • PBU24
  • PBU24-CONC
  • LEAD, URINE 24 HOUR
  • CONCENTRATION
Laboratory
Sendout
Reference Laboratory
Mayo PBU (8600)
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect 24 hour urine in a clean, plastic container with no metal cap or glued insert and no preservative. Aliquot urine into a clean, plastic container with no metal cap or glued insert and refrigerate within 4 hours of completion of collection. Record 24 hour urine volume and collection dates/times on the request form. Collection must take place prior to or 48 hours after administering gadolinium-containing contrast media.

Contraindications
Do not collect specimens from patients who have received gadolinium within the past 48 hours. Gadolinium, a material contained in some contrast media, is known to interfere with most metals tests.
Normal Volume
10 ml aliquot of 24 hour urine collection
Minimum Volume
2 ml aliquot of 24 hour urine collection
Additional Information

Test sent to Mayo Medical Laboratories

Billing
CPT Code
83655
Fee Code
20030
NY State Approved
No