Key result
Salivary measures of cortisol covary with serum levels and both measures remain stable over repeated samplings in healthy older adults.
Why the study?
Is salivary cortisol a valid index of adrenocortical activity compared to serum cortisol in healthy older adults?
Cross-Sectional (n=36)
Is salivary cortisol a valid index of adrenocortical activity compared to serum cortisol in healthy older adults?
Salivary cortisol is a valid and stable marker of adrenocortical activity in healthy older adults, offering a non-invasive alternative to serum measurements.
Salivary cortisol may offer a valid non-invasive alternative in healthy older adults; leaves open prospective validation in clinical populations.
The purpose of this study was to assess the validity of salivary cortisol as an index of adrenocortical activity in older adults. Serum and salivary cortisol samples were collected in a sample of 36 healthy older adults (mean age = 66.64). The relationship of serum and salivary cortisol levels was assessed using correlation and regression analyses. In addition, the stability of serum and salivary levels over repeated samplings was assessed. The findings indicate that salivary measures of cortisol covary with serum levels, and both measures remain stable over repeated samplings. The utility of salivary cortisol as a marker of physiological reactivity is discussed. Future research is recommended to explore the emotional correlates of physiological reactivity in older adult
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Reid et al. (1992) conducted a cross-sectional in Healthy (n=36). Salivary cortisol vs. Serum cortisol was evaluated on Relationship between serum and salivary cortisol levels. Salivary measures of cortisol covary with serum levels and both measures remain stable over repeated samplings in healthy older adults.
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