Boehringer Mannheim Gmbh

Knut Bartl

Helmut Lill

Joachim Ziegenhorn

Hans Wielinger

Albert Roder

Klaus Beaucamp

Wilhelm Tischer

Gunter Lang

Udo Becker

Peter Roeschlau

Hans Mollering

Peter Wunderwald

Andreas Dessauer

Helmut Rehner

Rudolf Portenhauser

Peter Stegmuller

Ulrich Nagele

Max Brandhuber

Gunter Wehmeyer

Sibylle Rollinger

The present invention provides a dry reagent for blood coagulation tests in which an at least partial course of the coagulation cascade takes place, comprising a carrier material which contains a chromophoric substrate of a protease of the blood coagulation system, at least one factor and/or co-factor of the blood coagulation system and a buffer.

Dry reagent for blood coagulation tests

The present invention provides a process for the photometric determination of protein C and/or protein S activity, especially in plasma, wherein the sample containing the protein C and/or protein S to be determined is incubated with a protein C activator from snake venom with the formation of activated protein C and/or protein S and the decrease of the formation of thrombin from prothrombin brought about by the coagulation factors and the activators thereof is determined by means of a chromogenic thrombin substrate.

Process for photometric determination of protein C and/or protein S

The present invention provides a process for stabilizing creatine kinase by disulphide modification, wherein creatine kinase is reacted in any desired sequence

Process for stabilizing kinase

The present invention provides an analysis element for the determination of coagulation parameters with the help of a detectable or a detection reaction-initiating substrate of a protease of the blood coagulation system and at least one factor and/or co-factor of the blood coagulation system and a buffer substance, wherein the factor and/or co-factor, together with a water-soluble, non-ionic polymer which does not falsely influence the course of the coagulation cascade, is impregnated on an open, planar composite structure which consists of a material which does not have a disturbing influence on the course of the coagulation.

Analysis element for determination of a coagulation parameter

The present invention provides a process for the photometric determination of prekallikrein in plasma, wherein plasma is incubated with a surface activator, the extinction obtained is measured, a chromogenic thrombin substrate is then added thereto, the optically determinable group liberated therefrom is measured at short time intervals or continuously and the gradient of the linear part of the curve obtained by plotting the time against the extinction is determined as a measure of the prekallikrein content. The partial thromboplastin time of plasma is simultaneously determined by carrying out the incubation in the presence of calcium ions and a phospholipid and measuring the time it takes the extinction to reach a predetermined level.

Process for determining the perkallikrein content and the partial

The present invention provides a process for the determination of fibrin monomer in plasma, wherein a plasma sample containing fibrin monomer and freed from plasmin inhibitors is incubated in buffered solution with tissue plasminogen activator (EPA), plasminogen and a chromogenic plasmin substrate and the color formed is measured as a measure of the amount of fibrin monomer. The present invention also provides a reagent for the determination of fibrin monomer in plasma, wherein it contains plasminogen, tissue plasminogen activator (EPA), chromogenic plasmin substrate and buffer (pH 7.0 to 9.0).

Process and reagent for the determination of fibrin monomer in plasma

The present invention provides a control or calibration serum for lipid diagnosis, wherein it contains the parameters relevant for lipid diagnosis in the normal or pathological concentration range in a single storage-stable form. The present invention also provides processes for the preparation of this control or calibration serum.

Control or calibration serum for lipid diagnosis

The present invention provides a process for the specific determination of the cholesterol of the LDL fraction in the presence of the HDL fraction of the lipoproteins of serum by the action of cholesterol esterase for the liberation of the cholesterol and oxidation of the liberated cholesterol with cholesterol oxidase and oxygen with the formation of hydrogen peroxide and cholestenone and kinetic measurement of the change of one of the reaction components of the oxidase reaction, especially the formation of hydrogen peroxide, wherein the measurement is carried out in a predetermined period of time, the reaction solution having a tenside concentration of 0.01 to 1.5 mmol/liter, a cholesterol esterase concentration of 0.1 to 30 U/ml. and a pH value of 6.5 to 8.0. The present invention also provides a reagent for carrying out this process.

Process for specific determination of cholesterol in the presence of the

The present invention provides a process for the direct turbidimetric determination of .beta.-lipoproteins (LDL) in body fluids by precipitation with polyanions and divalent cations, wherein the precipitation is carried out in the presence of a complex former at a pH value of from 7 to 9. The present invention also provides a reagent for the direct turbidimetric determination of .beta.-lipoproteins (LDL) in body fluids, comprising a polyanion, a salt of a divalent metal, a complex former and a substance buffering at pH 7 to 9.

Method and reagent for the determination of .beta.-lipoprotein

For the determination of glycerol, the latter is incubated with galactose oxidase in an aqueous medium in the presence of oxygen and either the oxygen consumption or the amount of H.sub.2 O.sub.2 or glyceraldehyde that is formed is determined. A reagent suitable for this purpose consists of galactose oxidase and a system for the determination of H.sub.2 O.sub.2 or a system for the determination of glyceraldehyde. It can additionally contain an agent for the saponification of esterified glycerol.

Method and reagent for the determination of glycerol

Method and reagent for the determination of the biological activity of heparin in plasma by adding thrombin or Factor X.sub.a as the proteolytic enzyme and a chromogen substrate of the latter and measuring the dye liberated from the chromogen substrate in the absence of exogenous anti-thrombin III, the improvement consisting of adding, additionally, at least one compound of the formula ##STR1## wherein X is oxygen or the group NR.sub.5 ;

Process and reagent for the determination of the biological activity of

The present invention provides a stabilized thrombin preparation in solid or dissolved form, especially for analytical purposes, containing, as a stabilizer, serum albumin together with at least one protease inhibitor and at least one chelate former.

Stabilized thrombin preparation

A control reagent for heparin activity determination comprising

Control reagent for heparin activity determination

A method for determining biologically active heparin comprising adding, in the absence of exogenous antithrombin III, a proteolytic enzyme selected from the group consisting of thrombin and factor Xa and a chromogen substrate for the enzyme to a heparin sample, measuring the dye released from the chromogen substrate and thus determining the amount of heparin present.

Growing community of inventors

Wilzhofen, Germany

Knut Bartl