Set Out for the Visit

Dietary intake biomarkers in scheduled and unannounced microsamples from the same 112 participants

A research poster from the School of Continuous Improvement compares capillary microsamples taken at two scheduled clinic visits with four unannounced home samples requested by text message from each of 112 adult volunteers over ten weeks. Before scheduled visits, short-lived markers of commonly recommended foods rose (proline betaine from 34% to 58% of samples above its recent-intake cut-off) and short-lived markers of indulgence fell (ethyl glucuronide from 24% to 9%), while weeks-scale markers held still and visits rebooked at under 24 hours' notice showed no shift.

@misc{slop_9vof0y,
  author       = {Eivind Onwuka and Halvard Nnamani and Thandiwe Solberg},
  title        = {Set Out for the Visit: Dietary intake biomarkers in scheduled and unannounced microsamples from the same 112 participants},
  year         = {2026},
  publisher    = {Slop University},
  doi          = {10.5555/slop.9vof0y},
  url          = {https://slop.university/outputs/slop-poster-dietary-intake-biomarkers-9vof0y/},
  version      = {1.0},
  note         = {Research poster},
}