Abstract: Disclosed is a detection method for detecting occurrence of nonspecific reaction in analysis for an antigen or an antibody contained in a biological sample with use of a measurement reagent containing an antibody or an antigen that causes antigen-antibody reaction with the antigen or the antibody in the biological sample, and the detection method includes: generating a data group about progress of antigen-antibody reaction between the antigen or the antibody contained in the biological sample and the antibody or the antigen contained in the measurement reagent; inputting the data group to a deep learning algorithm; and generating information about occurrence of nonspecific reaction, based on a result outputted by the deep learning algorithm.

Abstract: Disclosed is an analysis method for a blood specimen, including: obtaining a data group including a plurality of data forming a blood coagulation curve or a differential curve thereof; inputting the data group into a deep learning algorithm; and outputting, on the basis of a result obtained from the deep learning algorithm, information regarding a cause of prolongation of blood coagulation time of the blood specimen.

Abstract: Disclosed is a method for measuring a blood coagulation activity, comprising: acquiring a parameter related to differentiation of a coagulation waveform in a blood specimen collected from a patient administered with (1) a polypeptide containing a sequence represented by SEQ ID NO: 1, or (2) a polypeptide containing a polypeptide having 95% or more identity with the sequence represented by SEQ ID NO: 1 and having an activity as a blood coagulation factor VIII; and acquiring an activity value of a blood coagulation factor VIII in the blood specimen based on the acquired parameter.

Abstract: Disclosed is a method for measuring a clotting time, including the steps of: (A) mixing a blood sample, an activator, a phospholipid, and a nickel ion-forming compound to obtain a specimen; and (B) mixing the specimen obtained in step (A) with a calcium salt to prepare a measurement specimen and measuring the clotting time of the measurement specimen.

Abstract: A determination method of a blood sample may include: measuring, with a first coagulation time measurement reagent and a second coagulation time measurement reagent which contain phospholipids at different concentrations, coagulation times of a blood sample of a subject, coagulation times of a normal blood sample, and coagulation times of a mixed sample including the blood sample of the subject and the normal blood sample; acquiring a first index value and a second index value based on the coagulation times; and determining whether the blood sample of the subject is a blood sample containing a direct anticoagulant based on the first index value and the second index value.

Abstract: Disclosed is a method for determining a blood specimen, comprising preparing a first measurement sample by mixing a blood specimen of a subject with a first coagulation time measurement reagent and measuring first coagulation time, preparing a second measurement sample by mixing the blood specimen with a second coagulation time measurement reagent and measuring second coagulation time, and acquiring a value based on the first coagulation time and the second coagulation time, wherein the second coagulation time measurement reagent contains a metal ion and/or normal plasma, and the value is used to determine whether the blood specimen of a subject is a blood specimen containing a lupus anticoagulant or a blood specimen containing a direct anticoagulant.

Abstract: The present invention relates to a method for acquiring information on a cause of prolongation of coagulation time. The present invention also relates to a device, a system and a computer program for analyzing blood coagulation.

Abstract: A determination method of a blood sample may include: measuring, with a first coagulation time measurement reagent and a second coagulation time measurement reagent which contain phospholipids at different concentrations, coagulation times of a blood sample of a subject, coagulation times of a normal blood sample, and coagulation times of a mixed sample including the blood sample of the subject and the normal blood sample; acquiring a first index value and a second index value based on the coagulation times; and determining whether the blood sample of the subject is a blood sample containing a direct anticoagulant based on the first index value and the second index value.

Abstract: Disclosed is a method for measuring a clotting time, including the steps of: (A) mixing a blood sample, an activator, a phospholipid, and a nickel ion-forming compound to obtain a specimen; and (B) mixing the specimen obtained in step (A) with a calcium salt to prepare a measurement specimen and measuring the clotting time of the measurement specimen.

Abstract: Disclosed is a method for measuring a clotting time, including: a mixing step of mixing a blood sample, an activator, a phospholipid, and a manganese ion-forming compound to obtain a specimen; and a measurement step of mixing the specimen obtained in the mixing step with a calcium salt to prepare a measurement specimen and measuring the clotting time of the measurement specimen, wherein the blood sample is mixed with the manganese ion-forming compound separately from the activator and the phospholipid in the mixing step.

Abstract: Disclosed is a method for determining a blood specimen, comprising preparing a first measurement sample by mixing a blood specimen of a subject with a first coagulation time measurement reagent and measuring first coagulation time, preparing a second measurement sample by mixing the blood specimen with a second coagulation time measurement reagent and measuring second coagulation time, and acquiring a value based on the first coagulation time and the second coagulation time, wherein the second coagulation time measurement reagent contains a metal ion and/or normal plasma, and the value is used to determine whether the blood specimen of a subject is a blood specimen containing a lupus anticoagulant or a blood specimen containing a direct anticoagulant.

Abstract: Disclosed is a blood sample determination method including: preparing a mixed plasma by mixing a subject plasma and a normal plasma; emitting light to a measurement specimen obtained by mixing the mixed plasma and a clotting time measuring reagent, to obtain optical information regarding an amount of light from the measurement specimen; and determining whether the subject plasma is suspected to be a coagulation-factor-deficient plasma, on the basis of optical information obtained from one measurement specimen.

Abstract: Disclosed is a method for measuring a clotting time, including the steps of: (A) mixing a blood sample, an activator, a phospholipid, and a nickel ion-forming compound to obtain a specimen; and (B) mixing the specimen obtained in step (A) with a calcium salt to prepare a measurement specimen and measuring the clotting time of the measurement specimen.

Abstract: The present invention relates to a method for acquiring information on a cause of prolongation of coagulation time. The present invention also relates to a device, a system and a computer program for analyzing blood coagulation.

Abstract: Disclosed is a method for measuring clotting time including: preparing a measurement sample by mixing a blood specimen suspected to contain a lupus anticoagulant, an activator, and a divalent-metal-ion-producing compound for facilitating formation of a phospholipid-containing complex; and measuring a clotting time after adding, to the measurement sample, an aqueous solution of a calcium salt as a coagulation initiator.

Abstract: Disclosed is a reagent for activated partial thromboplastin time measurement including an ellagic acid compound, a phospholipid, and a polyvinyl alcohol compound.

Abstract: Disclosed is a method for measuring a clotting time, including: a mixing step of mixing a blood sample, an activator, a phospholipid, and a manganese ion-forming compound to obtain a specimen; and a measurement step of mixing the specimen obtained in the mixing step with a calcium salt to prepare a measurement specimen and measuring the clotting time of the measurement specimen, wherein the blood sample is mixed with the manganese ion-forming compound separately from the activator and the phospholipid in the mixing step.

Abstract: Disclosed is a method for measuring clotting time including: preparing a measurement sample by mixing a blood specimen suspected to contain a lupus anticoagulant, an activator, and a divalent-metal-ion-producing compound for facilitating formation of a phospholipid-containing complex; and measuring a clotting time after adding, to the measurement sample, an aqueous solution of a calcium salt as a coagulation initiator.

Abstract: Disclosed is a blood sample determination method including: preparing a mixed plasma by mixing a subject plasma and a normal plasma; emitting light to a measurement specimen obtained by mixing the mixed plasma and a clotting time measuring reagent, to obtain optical information regarding an amount of light from the measurement specimen; and determining whether the subject plasma is suspected to be a coagulation-factor-deficient plasma, on the basis of optical information obtained from one measurement specimen.

Abstract: In order to provide a reagent kit for detecting LA which can clearly separate a lupus anticoagulant (LA)-positive specimen group from an LA-negative specimen group, it is configured that the reagent kit for detecting LA contains a first clotting time-measuring reagent and a second clotting time-measuring reagent and at least one of the first clotting time-measuring reagent and the second clotting time-measuring reagent contains alkali metal salt. The presence or absence of LA can be determined using the kit.