Method: ICP-MS (Inductively Coupled Plasma Mass Spectrometry) with creatinine normalization by Jaffe Reaction (CLIA 14D0646470); not cleared or approved by the FDA. Results in µg/g creatinine; reference intervals based on NHANES population data under non-provoked conditions. Not a stand-alone diagnosis; should be interpreted in clinical context.
A derived biomarker is a value that is calculated from other directly measured biomarkers rather than being measured directly in the lab.
Key benefits of Tungsten (W) testing
- Tungsten industrial and environmental exposure tracking
- emerging metal monitoring
What is Tungsten (W)?
Tungsten is a hard metal used in cutting tools, electronics, ammunition (as a lead substitute), and some jewelry. It has increasingly replaced lead in some applications. Urinary tungsten reflects industrial or environmental exposure. Measured via ICP-MS.
Why is Tungsten (W) important?
Tungsten has traditionally been considered relatively low-toxicity, but emerging research has raised questions about chronic low-level exposure. Its use as a lead substitute in ammunition and fishing weights has increased environmental tungsten in some water systems. Occupational exposure in hard metal industries is a primary concern.
What insights will I get?
Your tungsten level may reflect occupational hard metal industry exposure, ammunition-related environmental contact, or tungsten-containing jewelry. Elevated levels may prompt review of occupational and recreational exposure sources.
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