2026 · Journal of oral rehabilitation · open access
Repeated Unstimulated Whole Saliva Collection: A Reliable Approach to Improve Diagnostic Accuracy
Musella et al.
The finding, in our words
Single unstimulated whole saliva measurements show high physiological variability, but averaging repeated self-collected samples, particularly in the evening, improves diagnostic reliability. This validation supports the implementation of home-based saliva testing for salivary gland dysfunction.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
Saliva samples collected using the OMNIgene ORAL device and oral wash samples remain stable for microbiome diversity and relative abundance analyses for up to five years when stored at -80°C. This supports the use of these self-collection methods for long-term prospective biobanking and decentralised clinical studies.
This study validated a low-cost 3D-printed smartphone attachment and paper sensor for measuring glucose, uric acid and cholesterol in saliva, demonstrating high correlation with standard ELISA results in a small clinical cohort. The authors suggest this platform offers a scalable solution for decentralised diabetes management by balancing sensitivity with affordability.
Using a synthetic swab for saliva collection gave results closest to no swab for both resting and stimulated samples, indicating minimal pre-analytical interference. The widest metabolite coverage was achieved with ACN:MeOH at 1:1 v/v and a ZIC-HILIC column for polar metabolites plus a C18 column for non-polar metabolites, and resting versus stimulated saliva yielded distinct metabolic profiles that may provide complementary clinical insights.
This study found that salivary 11-dehydrodexamethasone correlates strongly with serum dexamethasone, unlike salivary dexamethasone which shows poor agreement. This validation suggests patients could self-collect saliva samples at home to verify dexamethasone absorption for the overnight suppression test.
This study validated a lateral flow fluorescence assay using quantum dots for saliva and europium nanoparticles for serum to detect cortisol within physiological ranges. The test operates in 15 minutes with a handheld reader, supporting point-of-care and at-home monitoring without a cold chain.