Assessment of feasibility and outcomes of a salivary cortisol collection protocol in five American Indian communities
Walls et al.
The finding, in our words
A community-based participatory research study across five American Indian communities showed that a home-based salivary cortisol collection protocol achieved high participant compliance, with 91% providing at least one usable sample and 79% providing four, and that deviations from timing were not robustly associated with cortisol indices, indicating that such decentralised protocols can yield valid hormone data.
A paraphrase to the Library’s standard, never the abstract. The source is one link away and is always the authority.
This study used home self-collected saliva samples to successfully monitor cytokines and cortisol in mothers and infants, finding that a community singing intervention significantly reduced salivary interleukin-6 levels in mothers with postnatal depression.
In a study of 46 perinatal nicotine users, dried blood spots and saliva were used weekly to measure reproductive hormones, finding that lower postpartum estradiol and greater peripartum declines in oxytocin were associated with increased nicotine craving and use. This demonstrates the feasibility of decentralised microsampling and remote surveys for longitudinal hormone tracking in vulnerable populations.
Long-term sleep quality improved significantly during an internet-based intervention for major depressive disorder. Patients with poor sleep initially showed blunted cortisol awakening responses, which normalised as sleep quality improved, demonstrating that self-collected saliva can track biological stress changes in decentralised mental health care.
Repeated self-collection of saliva for steroid hormone analysis proved feasible in dementia care dyads over eight weeks, with participants providing a mean of 4.3 to 4.9 morning samples weekly during the first seven weeks, falling to 3.3 in the final week. The music intervention was associated with lower morning cortisol concentrations in caregivers, showing that home-based saliva microsampling can objectively capture intervention effects in decentralised studies.
The online Trier Social Stress Test increased cortisol and alpha amylase, increased arousal and reduced pleasure, with stronger cortisol responses in men and 64 per cent of participants classified as responders, supporting decentralised diagnostics by showing remote saliva sampling can capture stress biomarkers.