Method and system for measuring blood coagulation time

Details Method and system for measuring blood coagulation time Method and system for measuring blood coagulation time

1978-11-06

1981-02-24

Serwin, R. E.

Chemistry: physical processes

Physical processes

Crystallization

23918, 356 39, 364497, 422 73, G01N 3386

Patent

active

042525365

ABSTRACT:
A blood coagulation time measuring method comprising irradiating a mixture of blood plasma and reagent with a beam of specified amount of light, detecting changes in the amount of light scattered by the mixture, converting the resulting scattered light output signals to digital form at specified time interval, feeding the digital data to a computer, computing the difference between each input value and the input value immediately adjacent thereto with respect to time and storing the results, and determining the time, prior to the time at which a maximum difference value is obtained, at which a computed difference value corresponding to 1
of the maximum difference value is obtained. The time thus determined is the end point of the coagulation time. A system for practicing this method is also disclosed.

REFERENCES:
patent: 3458287 (1969-07-01), Gross et al.
patent: 3463614 (1969-08-01), Leslie
patent: 3593568 (1971-07-01), Schmitz et al.
patent: 4125327 (1978-11-01), Margolis

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