What is the role of salivary testing in the diagnosis of Sjögren syndrome?

Updated: Mar 05, 2021
  • Author: Sriya K Ranatunga, MD, MPH; Chief Editor: Herbert S Diamond, MD  more...
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Answer

Sialometry is a good measure of the degree of decreased salivary flow and helps to establish xerostomia, but the findings do not narrow the differential diagnoses.

Saliva from patients with Sjögren syndrome has elevated levels of sodium, chloride, lactoferrin, and IgA, but these findings are not specific.


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