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Viscosity of plasma in patients with rheumatoid arthritis.
  1. M Harreby,
  2. B Danneskiold-Samsøe,
  3. J Kjer,
  4. M Lauritzen
  1. Department of Rheumatology and Clinical Chemistry, Kommunehospitalet, Copenhagen, Denmark.


    The viscosity of plasma (PV) was investigated in 27 outpatients with classical or definite rheumatoid arthritis (RA) according to the American Rheumatism Association (ARA) criteria. The measurements showed a significantly raised PV in patients with RA (p less than 10(-5)) compared with a control group. There was a positive correlation between the PV and the blood erythrocyte sedimentation rate (B-ESR), and the increase in the PV is largely explained by increased concentrations of the plasma proteins, fibrinogen, and IgG.

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