Biomarker Reference · Cr(III)/Cr(VI)
Chromium (Blood) (Cr(III)/Cr(VI)) is a clinical biomarker used in heavy-metals-toxicology assessment. Trivalent chromium (Cr³⁺) is considered an essential trace element involved in potentiating insulin action, though the evidence for essentiality is contested. It is measured in 3 laboratory tests on BiomarkersLabs.com.
Trivalent chromium (Cr³⁺) is considered an essential trace element involved in potentiating insulin action, though the evidence for essentiality is contested. Hexavalent chromium (Cr⁶⁺) is a toxic and carcinogenic industrial compound. Blood chromium reflects recent exposure; it is used primarily in occupational and implant surveillance rather than routine nutritional assessment.
Blood chromium is ordered to assess hexavalent chromium exposure in industrial workers, where inhalation can cause lung cancer and dermatitis. Interpretation is complicated by contamination risk during collection and the inability of routine assays to distinguish Cr³⁺ from Cr⁶⁺. Nutritional chromium status is not reliably assessed by blood level.
Reference ranges vary by laboratory and assay platform. Interpret in context of the issuing laboratory's stated range.
3 tests on BiomarkersLabs.com include this biomarker.
Chromium (Blood) reference range in this test: <1 µg/L (general population).
Chromium (Blood) reference range in this test: ZRT laboratory-specific; typically <1 µg/L.
Chromium (Blood) reference range in this test: Background typically <2 µg/L; occupational exposure and prosthetic implants can raise levels.
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