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US 11,927,510 B2Granted
Standard calibration solution
AssigneeJEOL Ltd.
InventorsMasaki Takiwaki, Seketsu Fukuzawa, Yoshikuni Kikutani, Kiyotaka Fujino, Kentaro Abe, Yoshiyuki Ito
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Abstract
A standard calibration solution includes water, a non-alcoholic solvent that is mixed with water, and a steroid hormone, and a content of the non-alcoholic solvent is 10% by volume or more and 50% by volume or less. The standard calibration solution is used for quantitative measurement using a mass spectrometry device.
Claims6
A standard calibration solution consisting of:
- water;
- a non-alcoholic solvent that is mixed with the water;
- and
- a steroid hormone that is endogenous to serum or plasma,
- a content of the non-alcoholic solvent being 10% by volume or more and 50% by volume or less, and
- the standard calibration solution being free of an alcoholic solvent,
- wherein the steroid hormone that is endogenous to serum or plasma is a metabolite of vitamin D.
4 more elements
Dependencies are inferred from the claim text.