Plasma Viscosity, Viscosity, PV, Visc - Northern Devon Healthcare NHS Trust

Name	Plasma Viscosity, Viscosity, PV, Visc
Tube Type	Purple (EDTA)
Reporting Units	N/A
Reference Range	1.50 – 1.72 mPa/s
Availability	Referred test – see below
Target turnaround time	5 Days
Special requirements & notes	The CRP test is generally used as the routine inflammatory marker. There are only occasional cases which require specifically a plasma viscosity measurement For these patients plasma viscosity will be undertaken as a send-away test, (analysed in Exeter), if clinical criteria are met. Clinical indications are shown below: Rheumatological Disorders: PMR, inflammatory bowel disease, chronic diarrhoea, 2 w/w colorectal patients, sarcoidosis, SLE, Langerhan’s cell histiocytosis, vasculitis, TIA, ? Sjorgens, GCA/TA Haematological Disorders Waldenstroms, myeloma
Patient preparation	N/A
Volume required	1 tube, must be full.
If delayed transport to lab, store:	In refrigerator 2 – 8^oC
Factors affecting result interpretation	–
Time limit for add on test	4 Days
Pathology discipline	Haematology
‘Lab Tests Online’ link	https://labtestsonline.org.uk/tests/plasma-viscosity