Heavy Metal Screen, 24-Hour Urine

Heavy Metal Screen, 24-Hour Urine

Alternate Test Name

Heavy Metals Screen with Demographics, Urine

Epic Mnemonic
Sunquest Mnemonic

LAB398
HMSUB

Category

Sendouts

Methodology

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS)

Test Performance Schedule

Monday through Saturday

Result Availability

1 – 3 days

Container

24-hour Urine Container, no preservative

Volume

Pref. Vol.: 10.0 mL aliquot from well mixed 24-hour urine specimen
Min. Vol.: 10.0 mL aliquot from well mixed 24-hour urine specimen
NOTE: urine must be poured into metal-free tube

NOTE: When submitting a 24-hour specimen aliquot:
• Entire urine collection must be mixed well before the aliquot is poured off
• Total volume of 24-hour collection must be measured and clearly marked on aliquot label and on test requisition

Collection Instructions

• To begin collection of timed specimen, have patient urinate, noting the date and exact time
• Discard the first portion of urine, but document date and time of voiding on the container label and test requisition as the "start" of the timed specimen
• Refrigerate urine during and after collection
• Save all urine voided during the designated time period (usually 24 hours), including the portion voided at exact end of time period
• Document date and time of final voiding on the label and requisition as the "end" of the timed specimen

Transportation Instructions

• Upon receipt in the laboratory, mix the entire specimen very well and measure the 24-hour volume
• Pour off a 10.0 mL urine aliquot into a separate metal-free tube
• Send urine aliquot with notation of entire 24-hour urine volume on aliquot label and on requisition
• Refrigerate

Stability

• Room temperature: Unacceptable
• Refrigerated (preferred): 7 days
• Frozen: 7 days

Causes for Rejection

Specimen not submitted in metal-free tube

Remarks

Patient Preparation:
Diet, medication and nutritional supplements may introduce interfering substances. Patients should be encouraged to discontinue nutritional supplements, vitamins, minerals, non-essential over-the-counter medications (upon advice of their physician), and to avoid shellfish and seafood for 48 to 72 hours

• Test Includes:
• Arsenic (As)
• Cadmium (Cd)
• Mercury (Hg)
• Lead (Pb)

CPT Codes

82175, 82300, 83655, 83825

Effective/Revised

11/19/2019