Lead
Label Mnemonic: LEADUR
Epic Lab Code: LAB8530
Downtime Form: A-1a Miscellaneous Request
Commercial Mail-out Laboratory
5231 RCP
356-8593
Specimen(s):
Random Urine
Specimen Instructions:
Patient Prep: 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. Abstinence from iodine-containing medications or contrast agents for at least 1 month prior to collecting specimens for elemental testing is recommended.
Collection Medium:
Urine (Random)-BD Vacutainer®, no additive yellow top
Minimum:
Preferred Minimum: 8 mL random urine
Absolute Minimum: 1 mL random urine
Rejection Criteria:
Urine collected within 48 hours after administration of a gadolinium (Gd) containing contrast media (may occur with MRI studies). Acid preserved urine.
Turn Around Time:
1-3 days upon receipt at reference laboratory
Reference Range:
Lead, Urine - per volume: 0.0-1.4 μg/L
Lead, Urine - ratio to CRT: 0.0-1.4 μg/gCRT
Interpretive Data:
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.
Methodology:
Quantitative Inductively Coupled Plasma-Mass Spectrometry
CPT Code:
83655