Most blood test results tell you whether you're sick. We tell you whether you're optimised. There's a significant gap between the two — and most people live in it.
Accreditation
All blood analysis is performed by Forth Connect — one of the UK's leading private diagnostics providers. Labs hold UKAS accreditation and follow the same rigorous standards as NHS pathology services. Samples are processed using established clinical methodology.
Forth Connect
Laboratory Partner
UKAS Accredited
ISO 15189
NHS Standard
Clinical methodology
Capillary Testing
No venous draw
UK Laboratories
Domestic processing
ConnectPro White-Label
Delta Lab operates on Forth's ConnectPro platform — the same infrastructure used by leading private clinics across the UK.
Clinical vs Optimal
Clinical reference ranges are designed to identify disease in a population. They're set at the 2.5th–97.5th percentile of all adults — including sedentary, unhealthy individuals. A testosterone level of 12 nmol/L is “normal” by NHS standards. For a 42-year-old male athlete, it may represent significant suboptimal function.
nmol/L
Clinical "normal"
8–30 nmol/L
Performance optimal
18–25 nmol/L
nmol/L
Clinical "normal"
50–200 nmol/L
Performance optimal
100–150 nmol/L
Delta Lab analyses every marker against performance-optimal reference ranges built from peer-reviewed sports medicine and longevity research — not just clinical minimums. The gap between “not sick” and “performing at your ceiling” is where most men live. We quantify it precisely.
AI Protocol
Raw biomarker data is processed by an AI system built on Claude (Anthropic's frontier AI model). The system cross-references every marker against its interactions with other markers — identifying root causes rather than isolated values.
“Suboptimal Vitamin D doesn't just affect bone density. It suppresses testosterone synthesis, impairs immune function, and slows tissue repair. Correcting a single deficiency can cascade improvements across multiple systems.”
— Example AI insight
This is not a rules engine matching markers to supplements. It is a reasoning system that understands physiology — built to produce the kind of analysis a sports physician and performance nutritionist would give, delivered instantly and personalised to your exact results.
Vitamin D → Testosterone
HighDeficient 25-OH Vitamin D (38 nmol/L) is actively suppressing CYP17A1 enzyme activity, reducing testosterone synthesis. Priority correction.
Ferritin → VO2 & Recovery
MediumFerritin at 22 µg/L limits erythropoiesis efficiency. Training at current load will continue to deplete stores. Recommend iron + B12 protocol.
Cortisol → Sleep Architecture
OKAM cortisol within range. No acute HPA suppression detected. Continue current stress management approach.
Identifies how markers interact — not just individual values in isolation.
Distinguishes upstream cause from downstream symptom.
Supplement quantities calibrated to severity of each deficiency.
No medical jargon. Precise, actionable, and immediately understandable.
Marker Science
Every marker on the panel earns its place. Here's the science behind six of the most performance-critical.
Primary male performance hormone
Affects energy, muscle synthesis, libido, cognitive function, and mood. Free testosterone — the biologically active fraction — is often suboptimal even when total is within clinical range. Both must be assessed together.
Steroid hormone precursor
Deficient in 80%+ of UK adults, especially athletes who train indoors. Directly regulates testosterone synthesis, immune function, bone density, and sleep quality. One of the highest-yield corrections in the panel.
Ultra-sensitive inflammation marker
Chronic low-grade inflammation suppresses testosterone, impairs recovery, and contributes to cognitive fatigue. Identifies the root driver behind 'mystery fatigue' that standard bloods miss entirely.
Stress hormone — recovery & testosterone axis
Elevated cortisol suppresses testosterone synthesis and disrupts sleep architecture. Essential for understanding the training load vs. recovery balance — particularly relevant for athletes in high-volume blocks.
Iron storage marker
Often low in athletes despite normal haemoglobin. Ferritin below 50 µg/L causes significant fatigue, poor VO2 max, and impaired recovery — even when you're not technically anaemic. Standard bloods don't test this.
Growth hormone proxy
Reflects growth hormone output. Directly affects muscle recovery, body composition, and tissue repair. Declines significantly after 35, and is one of the clearest markers of recovery capacity in older athletes.
Full panel: 50+ markers including thyroid function, metabolic, cardiovascular, and haematological markers.
Protocol Science
The supplement protocol is generated entirely from your results. If your Vitamin D is optimal, you won't receive a Vitamin D supplement. If your Omega-3 index is low, you'll receive a dose calibrated to your specific reading.
Third-party tested ingredients. No proprietary blends, no unnecessary fillers. Every component is independently verified for purity and potency.
Magnesium glycinate — not oxide. Methylfolate — not folic acid. Forms your body can actually absorb, not the cheapest available version.
Protocol updates every 90 days as your markers change. You're not taking last year's stack forever. The protocol evolves as your biology does.
Fulfilled by Nutribl
Supplements are white-label dropshipped via Nutribl — a UK-based manufacturer producing GMP-certified, third-party tested products. Delivered direct to your door monthly, no minimum commitment.
Get Started
Book a 30-minute consultation. We'll walk you through what we test, what we typically find in men your age, and whether the programme is right for you.
Book a Free ConsultationNo obligation · No hard sell · Just data