Hormone concentration profiles over 24 hours for TSH, GH, ACTH, and cortisol

For each hormone, the hormone concentration profiles over 24 h are depicted for each of the 38 older subjects from the Leiden Longevity Study as grey lines. For each of the hormones, the mean hormone concentration profile of the 38 participants over 24 h is depicted as a black line. Serum hormone concentration measurements were performed every 10 minutes for 24 h, starting around 09:00 h.