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VISCOSITY, serum (087-0285)
Test Mnemonic:


Specimen Requirements:

Blood is collected by routine venipuncture, kept at body temperature, and tube delivered to the laboratory by hand within 30 minutes of collection.  Preferred: 7mL of blood in SST (gel barrier) tube; Acceptable: Red-topped tube. (Min.: 3mL ).


Prompt delivery to Sample Management within 30 minutes.

Specimen Preparation:

Sample must be kept at body temperature (37°C); deliver to the laboratory within 30 minutes of collection. Lab must be notified prior to collection. Once receiving in the laboratory, place blood sample in a 37°C water bath for one hour to allow the clot to retract. Store refrigerated at 2-8°C until analysis can be completed.


Refrigerated for ≤ 4 days.

Causes for Rejection:

Specimen not deliver at the correct temperature, incomplete and/or incorrect sample identification, improper storage/transport, and lipemia.                   

Reference Range:

By report (reports may vary based on instrumentation, patient age and sex)

Turnaround Time:

 M-F: within 24 hours  




Special Chemistry; Monday – Friday:  7am- 3:30pm  

CPT 4 Code:



Sample must be kept at body temperature and delivered within 30 minutes of collection directly to the Laboratory Medicine, Sample Management, Room 7.412 CSW. Please notify Lab.  Not available on Week-ends.

When ordering tests for which Medicare or Medicaid reimbursement will be sought, physicians should only order tests that are medically necessary for the diagnosis or treatment of the patient. Components of the organ or disease panels may be ordered individually. The diagnostic information must substantiate all tests ordered and must be in the form of an ICD-10 code or its verbal equivalent.
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