Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  


Geisinger Epic Procedure Code: LAB3252             Geisinger Epic ID: 7233

Specimen type:
Preferred collection container:
Specimen required:
2 mL aliquot of serum; minimum 1.5 mL.

Specimen processing instructions:
Incubate at 37°C for 30 minutes. Centrifuge immediately after incubation at designated time and speed to obtain platelet-poor serum (<10,000/µL). Do not freeze sample. 
Transport temperature:
Room temperature. Do not freeze sample.
Specimen stability:
Stable 24 hours at 20°C.
Rejection criteria:
Stability limits exceeded.

Reference interval:
1.4 - 1.8.
Additional information:
Turnaround Times: Routine - 4 hours, STAT - 1 Hours, Extended TAT - 3 Days, Timed - 60 minutes, Pending Discharge - 45 minutes.
CPT code(s):
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Ratio of serum to water.
Capillary viscometer
Serum Viscosity, VISC
Clinical significance:
Increased serum viscosity is most commonly seen in patients with multiple myeloma and Waldenstrom macroglobulinemia. Capillary occlusion and stasis hypoxia may be observed in patients with increased serum viscosity.
Doctoral Director(s:)
Mary Dhesi MD    
Review Date: 01/03/2023

Performing Locations

Geisinger Medical Center

Performing laboratory: Coagulation
Technical Lead: Margaret Knowles-Tuchman
Frequency: Daily, 7 a.m. - 11:30 p.m.
Performed STAT? Yes
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