Lead
| Label Mnemonic: | UPB |
| Epic code: | LAB404 |
| Downtime form: | A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery |
Commercial Mailout Laboratory
6240-8 RCP
356-8593
6240-8 RCP
356-8593
Specimen(s):
Urine More information
Specimen
Instructions:
Refrigerate during 24 hr collection in plastic container.
Reference laboratory studies indicate that refrigeration of
urine alone, during and after collection, preserves specimens
adequately, if tested within 14 days of collection.
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. 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.
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. 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.
Collection Medium:
) |
| Urine - 24 hour/timed plastic urine container |
Minimum:
Preferred Minimum: 8 mL aliquot from 24 hour collection.
Absolute Minimum: 1 mL aliquot from 24 hour collection.
Refrigerate during collection and submission.
Absolute Minimum: 1 mL aliquot from 24 hour collection.
Refrigerate during collection and submission.
Rejection Criteria:
Urine collected within 72 hours after administration of iodinated or
gadolinium-based contrast media. Acid preserved urine. Specimens
contaminated with blood or fecal material. Specimens transported in
non-trace element free transport tube (with the exception of the
original device).
Turn Around
Time:
1-5 days upon receipt at reference laboratory
Reference Range:
COMPONENTS REFERENCE INTERVAL
Lead, Urine - per Volume 0.0 - 5.0 μg/d
Lead, Urine - per 24 hour 0.0 - 8.1 μg/L
Lead Urine - ratio to CRT 0.0 - 5.0 μg/gCRT
Creatinine, Urine-per 24 hr (mg/d) Male Female
3-8 yrs: 140-700 3-8 yrs: 140-700
9-12 yrs: 300-1300 9-12 yrs: 300-1300
13-17 yrs: 500-2300 13-17 yrs: 400-1600
18-50 yrs: 1000-2500 18-50 yrs: 700-1600
51-80 yrs: 800-2100 51-80 yrs: 500-1400
81 yrs+: 600-2000 81 yrs+: 400-1300
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
See Additional Information:
Urine Tests Requiring Preservatives, Refrigeration or Special Containers
Urine Tests Requiring Preservatives, Refrigeration or Special Containers