Based on availability
If a product is intended to produce a local effect along the GI lining, a low blood concentration would not necessarily mean the delivery design failed
Peptide absorption can be affected by recent food intake, though the clinical significance is debated
Proper storage and handling procedures are important for maintaining product purity, consistency, and reliability throughout laboratory applications
Paolicelli RC, Bolasco G, Pagani F, Maggi L, Scianni M, Panzanelli P, et al
The influence of the HPA axis on the immune response can occur through three mechanisms involving the influence of hormones of adrenocorticotropic origin, the influence of hypothalamic hormones, and the activity of pituitary hormones