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US 10,309,971 B2Granted
Thyroglobulin quantitation by mass spectrometry
AssigneeQuest Diagnostics Investments Incorporated
InventorsYanni Zhang, Nigel J. Clarke, Richard E. Reitz
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Abstract
Provided are methods for determining the amount of thyroglobulin in a sample using various purification steps followed by mass spectrometry. The methods generally involve purifying thyroglobulin in a test sample, digesting thyroglobulin to form peptide T129, purifying peptide T129, ionizing peptide T129, detecting the amount of peptide T129 ion generated, and relating the amount of peptide T129 ion to the amount of thyroglobulin originally present in the sample.
Claims17
A method for determining the amount of thyroglobulin in a test sample, comprising:
- (a) enriching a digested thyroglobultin (Tg) peptide consisting of an amino acid sequence VIFDANAPVAVR (SEQ. ID NO:
- 4);
- (b) ionizing the Tg peptide to generate one or more ions detectable by mass spectrometry
- (c) quantifying the amount of the one or more Tg peptide ions from step (b) by mass spectrometry, wherein the amount of the one or more Tg peptide ions is related to the amount of thyroglobulin in said test sample.
1 more element
Dependencies are inferred from the claim text.