Plasma Viscosity or Plasma Viscometry (PV) is the measurement of the viscosity of blood plasma. The end result is a number given in milliPascal seconds (mPa.s) – known as the PV, or plasma viscosity.
Plasma viscosity testing is an easy-to-use, rapid, and stable diagnostic tool for screening and monitoring patients with conditions including rheumatoid arthritis, myeloma, macroglobulinaemia and plasma hyperviscosity.
Interpretation of PV Results
Plasma viscosity is a non-specific screening test used in diagnosing a host of disorders. Here you can find out more information.
|Results||PV range (mPa.s)|
Reported at 25ºC
|PV range (mPa.s)|
Reported at 37ºC
|Normal Range||1.50 - 1.72||1.12 - 1.27|
|Low results||< 1.40||< 1.05||Found in infants under 3 years old and patients with low immunoglobulin or fibrinogen levels.|
|High results||1.75 - 2.00||1.30 - 1.46||Chronic disorders e.g. infection, malignancy, vascular disease. Autoimmune such as rheumatic diseases.|
|High results||2.01 - 3.00||1.47 - 2.18||Suggestive of Myeloma. IgG-paraproteins. High concentration of asymmetric paraproteins|
|Extremely high results||> 3.00||> 2.18||Suggestive of Waldenstrom's macroglobulinaemia. Grossly raised IgM-paraproteins.|
The above is a very basic summary and more information is available in Articles and Guidelines and links to other websites which can be found at the bottom of this page.
Where is Plasma Viscosity used as a Diagnostic Tool?
Chart : Customer reported usage of PV in screening tests