Nanostructured zinc-coordination supraparticles on cellulose fibers: A 3D-Printed μ-FAD integrated smartphone platform for multiplexed salivary metabolic monitoring
Yang et al.
The finding, in our words
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.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
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.
A two‑tier decentralised testing strategy using self‑collected saliva pools detected SARS‑CoV‑2 with higher sensitivity than a commercial IVD RT‑qPCR test and enabled identification of asymptomatic cases at lower cost.
Saliva self-collection with TRIzol extraction matched nasopharyngeal swab performance for SARS-CoV-2 detection while enabling room-temperature storage without specialised tubes, offering a lower-cost decentralised option suitable for large-scale screening programmes.
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.
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.