Selenium, serum — lab reference
In the reference guideTrace-metal collection and geographic/dietary context matter.
THE PURSER WELLNESS ENCYCLOPEDIA
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What’s searchable?Trace-metal collection and geographic/dietary context matter.
Normal serum magnesium does not exclude tissue depletion.
Measured and calculated values may differ. Ask your clinician to review osmolal gap when indicated.
Morning fasting collection is preferred when practical. Day-to-day variation is substantial.
<4.0 suggests deficiency. Recent intake or supplementation may raise serum values.
Fasting, time of day, inflammation, albumin, and trace-metal collection technique matter.
Estrogen, pregnancy, inflammation, liver function, and ceruloplasmin affect values.
Collect at a defined time. Assay-specific; dynamic testing may be required.
Time-specific and assay-specific.
Serum chemistry value. Do not substitute arterial blood-gas bicarbonate ranges.
Acute-phase reactant; interpret with serum/urine copper and clinical context.
Your lab may use its own range. Symptoms, medicines, and the types of white blood cells also matter.
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