25-Hydroxy Vitamin D
The circulating indicator of systemic vitamin D levels.
Clinical Relevance
Vitamin D acts as a pre-hormone regulating calcium absorption, bone mineralization, immune cells, neuromuscular function, and inflammatory modulation.
Why It Varies
Influenced by solar UV exposure, geographical latitude, skin pigmentation, dietary supplementation, and digestive fat absorption capabilities.
Longevity & Lifestyle Pointers
- Ensure appropriate outdoor exposure during sunny months in the UK.
- Discuss a winter supplementation strategy (400-1000 IU daily) with a clinician.
- Consume vitamin D-rich foods such as egg yolks, mushrooms, and oily fish.
Clinical Governance & Disclaimer
Deficiency is defined in the UK as below 50 nmol/L. Sub-optimal levels (50-75 nmol/L) can impact fatigue and athletic recovery, while severe deficiency requires clinical assessment for bone health.
* Aven Health supports biological optimization and longitudinal monitoring. We do not provide acute clinical interventions, diagnostics, or treatments. If blood panels identify medical concerns, you are signposted directly to primary care GP paths.
Check your baseline values at home
This marker is included in our signature assessment. Join the waitlist to establish your baseline with a home visit.
Assessment Flow
- 1.15-min clinician draw at home
- 2.Accredited laboratory dispatch
- 3.Clinician-reviewed results in your Hub within 72 hours
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72-Hour Results
Cold-chain lab turnaround with clinician-reviewed reports.
Concierge Service
HCPC-registered paramedics visiting your preferred home or office.