Quantitative Inductively Coupled Plasma-Mass Spectrometry
Diet, medication, and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, and non-essential over-the-counter medications (upon the advice of their physician). High concentrations of iodine may interfere with elemental testing. Collection of urine specimens from patients receiving iodinated or gadolinium-based contrast media should be avoided for a minimum of 72 hours post-exposure. Collection from patients with impaired kidney function should be avoided for a minimum of 14 days post-contrast media exposure.
Transfer an 8 mL aliquot from a well-mixed collection to ARUP Trace Element-Free Transport Tubes (ARUP supply #43116), available online through eSupply using ARUP Connect or contact ARUP Client Services at (800) 522-2787. (Min: 1 mL)
Refrigerated. Also acceptable: Room temperature or frozen.
Urine collected within 72 hours after administration of iodinated or gadolinium-based contrast media.
Ambient: 1 week; Refrigerated: 2 weeks; Frozen: 1 year
Effective November 12,2018
|Lead, Urine - per volume||0.0-5.0 µg/L|
|Lead, Urine - ratio to CRT||0.0-5.0 µg/gCRT|
Quantification of urine excretion rates before or after chelation therapy has been used as an indicator of lead exposure. Urinary excretion of >125 mg of lead per 24 hours is usually associated with related evidence of lead toxicity.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|0020207||Creatinine, Urine - per volume||2161-8|
|0025062||Lead, Urine - per volume||5676-2|
|0025065||Lead, Urine - ratio to CRT||13466-8|
- Lead/Creatinine Ratio, Random, Urine
- Normalized Urine Lead
- Pb urine
- urine lead concentration