Reliability of the saliva self-sampling with and without supervision

One of the least invasive sampling methods suitable for self-sampling is saliva spitting. The aim this study to evaluate suitability unsupervised testing. Two strategies were compared on basis visual evaluation samples, measurement cortisol levels in samples and questionnaire survey. obtained by supervised found be fully further analysis. In contrast, not all from self-collection can used: 13% non-compliance with minimum required sample volume, 8% some food/drink residues 26% taken at wrong day time. About 42% probands made one significant error procedure. These results indicate that accuracy based analysis received limited. For clinical investigation, presence an inner standard (referring reliability procedure) required.