Serum doesn't make up what's healthy. Every range, score, and insight is sourced from published clinical research — and updated as the science evolves.
Most health apps show you a green checkmark when your result falls inside a lab's reference range. But those ranges are designed to catch disease — not to help you perform, age well, or understand your body at its best.
Serum uses a layered approach: standard ranges for clinical context, functional ranges for everyday optimisation, and optimal zones for people actively working on their health. You see all three — and you decide what to target.
Standard lab ranges are built to flag disease in the general population — not to optimise health in someone like you. Serum layers in functional and optimal ranges from peer-reviewed literature so you can see not just if you're "normal," but whether you're thriving.
Your Overall, Blood, and Cardio scores aren't surveys or self-reports. They're calculated directly from your biomarker values — weighted by clinical significance and benchmarked against both standard and optimal thresholds from the literature.
Every marker in Serum includes what it measures, why it matters, what drives it up or down, and what the research says about optimal ranges. Written by humans who've read the studies — not AI summaries of AI summaries.
Hormone reference ranges vary significantly based on biological sex and whether someone is on hormone therapy. Serum accounts for this — so the ranges shown to you are accurate for your body, not a one-size-fits-all average.
Markers like testosterone, estradiol, FSH, LH, and SHBG have meaningfully different reference ranges depending on biological sex. Serum uses your profile to show you the right set — so a flagged result actually means something for you.
People on hormone replacement therapy — for any reason — have different target ranges for key markers. Serum recognises when HRT is relevant and adjusts context accordingly, so your results aren't compared to a baseline that doesn't apply to you.
During setup, Serum asks a few simple questions to determine which reference data is most accurate for you. You decide what applies — and you can update it any time in Settings. No assumptions, no wrong defaults.
Not all "in range" is the same. Serum shows you where you fall across all three thresholds simultaneously.
The range used by Quest, LabCorp, and your doctor's office. Derived from population studies — designed to flag pathology, not optimise function.
A tighter window used by functional medicine practitioners and researchers interested in prevention and early intervention — before disease develops.
The target range associated with lowest all-cause mortality and peak performance in the clinical literature. Where you want to be if you're playing the long game.
Tap any biomarker in Serum and get the full story — what it is, what it measures, what moves it, and what the research says about where yours should be. No vague "consult your doctor" dead ends.