Blood Sciences Test
Plasma Viscosity
Specimen
Whole blood EDTA
Special Instructions
Test performed from FBC tube provided it is not underfilled. These tubes are retained for 48hrs therefore a PV can normally be added after sample receipt if required.
Paediatric Samples: If an adult tube cannot be used please use the 1.2mL monovette (similar to the above tube but a smaller diameter).
Screw top microtubes are not suitable.
Factors affecting results
Clotted samples cannot be tested
Reference Ranges
1.50 – 1.72 mPa.s
From: Chanarin I Laboratory Haematology 1989
Test Usage
| Interpretation of results – Reference range 1.50 – 1.72 mPa.s (milli Pascal seconds) | ||
| Low results | <1.50 | Found in infants under 3 years old and patients with low immunoglobulin or fibrinogen levels. |
| High results | 1.75 – 2.00 | Found in many chronic disorders e.g. infection, malignancy, collagen vascular disease. |
| Very high results | 2.01 – 3.00 | Suggestive of myeloma. |
| Extremely high results | >3.00 | Suggestive of Waldenstrom’s macroglobulinaemia. |
Turnaround time
1-2 days
Availability
In house
Clinical Advice
Clinical advice is available from the Haematology Medical team (contact RD&E switchboard on 01392 411611)
