Method of analyzing clinically relevant liquids and suspensions
First Claim
1. A method of analyzing clinically relevant liquids and/or suspensions, comprisinga) measuring the infrared spectra of a plurality of samples belonging to known classes,b) implementing a multivariate evaluation procedure and training the multivariate evaluation procedure by selecting parameters ensuring a reliable assignment of the samples to the known classes,c) storing the parameters of the multivariate evaluation procedures obtained,d) providing a sample of the liquid and/or suspension to be analyzed,e) applying the sample to a carrier,f) drying the sample,g) exposing the sample to infrared radiation,h) generating an infrared spectrum of the sample,i) analyzing the infrared spectrum by means of a multivariate evaluation procedure, andj) assigning the sample to a class of the multivariate evaluation procedure.
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Abstract
A method of analyzing clinically relevant sample liquids and suspensions is such that where infrared spectra of dried samples are generated and evaluated using a multivariate evaluation procedure. In the evaluation procedure, the samples to be analyzed are assigned to classes. The evaluation procedure is trained with samples of known classes to adjust the parameters of the evaluation procedures such that samples of unknown classification can be assigned to known classes. In an advantageous manner, the infrared spectra can be generated by a transmittance measurement on a dried film of the sample.
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Citations
27 Claims
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1. A method of analyzing clinically relevant liquids and/or suspensions, comprising
a) measuring the infrared spectra of a plurality of samples belonging to known classes, b) implementing a multivariate evaluation procedure and training the multivariate evaluation procedure by selecting parameters ensuring a reliable assignment of the samples to the known classes, c) storing the parameters of the multivariate evaluation procedures obtained, d) providing a sample of the liquid and/or suspension to be analyzed, e) applying the sample to a carrier, f) drying the sample, g) exposing the sample to infrared radiation, h) generating an infrared spectrum of the sample, i) analyzing the infrared spectrum by means of a multivariate evaluation procedure, and j) assigning the sample to a class of the multivariate evaluation procedure.
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16. Method of analyzing clinically relevant liquids and/or suspensions, comprising
a) providing a sample of the liquid and/or suspension, b) placing the sample onto a carrier having at least one opening in which the sample forms a hanging film, c) drying the sample, d) allowing radiation to traverse the dried sample contained in the opening, e) detecting radiation transmitted across the dried sample to generate an infrared spectrum, f) evaluating the infrared spectrum to determine the concentration of at least one analyte contained in the sample, and/or to classify the sample.
Specification