Days Set Up
Monday - Friday, 7:30am - 4:00pm
Analytic Time

8 hours

MiChart Code
Viscosity, Plasma
Soft Order Code

Test Updated:


Plasma Viscosity
Whole Blood Viscosity, Plasma Viscosity

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Test Overview

Test Methodology

Brookfield Cone/Plate Viscometer

Test Usage

Detection of hyperviscosity states in myeloma, macroglobulinemia, polycythemia and other abnormalities of formed blood elements.

Reference Range

Plasma Viscosity: 1.35 - 1.85 cP. Whole blood viscosity report includes a concurrently measured patient hematocrit and the derived whole blood viscosity expressed as "equivalent hematocrit".

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Onsite

Collect blood in a 7 mL green top tube. Refrigerate and send intact specimen.

Collection Offsite

Collect blood in a 7 mL green top tube. Refrigerate and send intact specimen. Specimen may be stored refrigerated for up to 4 days.

Normal Volume
7 mL whole blood
Minimum Volume
7 mL whole blood

Billing Information

CPT Code
Pro Fee Code

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.