O. Ohnuma

Most-cited papers

1. Use of theophylline in the investigation of pseudothrombocytopenia induced by edetic acid (EDTA-2K).

   O. Ohnuma, Y. Shirata, K. Miyazawa

   1988Journal of Clinical Pathology18 citations Open access

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2. Japanese collaborative study to assess inter‐laboratory variation in factor VII activity assays

   Osamu Takamiya, S. Ishikawa, O. Ohnuma, H. Suehisa +4 more

   2007Journal of Thrombosis and Haemostasis9 citations Open access

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3. Clinical usefulness of the dilute Russell viper venom time test for patients taking warfarin

   K. Kanouchi, H. Narimatsu, O. Ohnuma, K. Morikane +1 more

   2017International journal of hematology7 citations

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4. Japanese collaborative study for fibrinogen assay: variability of the fibrinogen assay between different laboratories does not improve when a common calibrator is used.

   Osamu Takamiya, S. Hando, M. Tekondo, S. Bando +7 more

   2005Clinical and Laboratory Haematology7 citations

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5. [Improvement of the system for collecting blood samples, at the Division of Clinical Laboratory in Yamagata University Hospital, based on the complaints of patients: The way to perform the newly-developed 30-min changeover method for collecting blood samples by medical technologists].

   O. Ohnuma, T. Shirata, T. Suzuki, Makiko Sato +8 more

   2010Rinsho byori. The Japanese journal of clinical pathology0 citations

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6. Effect of cathether sampling on plasma β-thromboglobulin and platelet factor 4

   O. Ohnuma, I. Yamaguchi, E. Komatsu, S. Kagaya +2 more

   19850 citations Open access

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7. [A method for correction of abnormal values in measuring cardiac output with the dichromatic earpiece densitometer].

   I. Yamaguchi, E. Komatsu, O. Ohnuma, S. Kagaya +1 more

   1985Kokyu to junkan. Respiration & circulation0 citations

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