Patent · US Active

Method and apparatus for detecting pharmaceuticals in a sample

US8841633B2 · kind B2 · utility

1Cited by

2References

22Claims

0Family size

Inventors

Ian Alan Nicholls · Kalmar, SE
Bjorn C.G. Karlsson · Kalmar, SE
Annika M Rosengren · Kalmar, SE
Per Andersson · Fagersanna, SE

Key dates

Filing date	Mar 25, 2010
Grant date	Sep 23, 2014
Priority date	—
Expiry date	Jun 23, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01N21/6408
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus for measuring a vitamin K antagonizing anticoagulant present in a sample (116), arranged to: irradiate (304) the sample (116) with light from a light source (114) for exciting the anticoagulant through its absorption of the light, the excitation of the sample (116) resulting in a fluorescent emission from the sample (116); measure (306) the fluorescent emission from the sample (116); determine (308) a fluorescence lifetime (T1) of the fluorescent emission of the sample (116); determine (310) an intensity (A1) of the fluorescent emission at the fluorescence lifetime (T1); and determine (312) a amount (c) of the anticoagulant, as a function of the intensity (A1) of the fluorescent emission at the fluorescence lifetime (T1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.