You've tried diets
You've probably tried losing the same weight more than once.
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At LifeLab, we believe successful weight loss starts with understanding your metabolism.
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Our physician-led program combines metabolic testing, body composition analysis, and ongoing clinical support to help you lose fat, preserve muscle, and improve your long-term health.
What makes LifeLab different
Built for your health goals, not for average results.
Active lifestyle medicine
Care designed for people who want to stay active, strong and healthy as they age — with fat loss and muscle preservation treated as one goal, not two.
Advanced cardiometabolic testing
VO₂ max, resting metabolic rate, body composition, advanced biomarkers and imaging — measured, interpreted, and repeated so you can see what's changing.
Ongoing clinical support
Structured follow-up and direct physician access, so the plan adapts as your metabolism, body composition and cardiovascular risk improve.
Ready to get started?
Your first step is simple. Book your metabolic assessment online.
$249
metabolic assessment
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Book online
Choose a time that works for you — no membership or referral needed. -
Get measured
Resting metabolic rate testing, body composition measurements, and a blood draw if needed. -
Meet your physician
A consultation with Dr. Pifer to discuss any medical issues you may have and define your goals. -
Review your results
A follow-up video appointment to go through your numbers and decide on next steps.
A different approach to preventive medicine
Designed for people who want to remain active, strong and healthy as they age.
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LifeLab is a physician-led medical practice built around a simple idea: good preventive care should do more than identify disease. It should help you preserve the health, fitness and capability that allow you to live the life you want.
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We have a specific way to integrate physiologic data such as VOâ‚‚ max, body composition, advanced biomarkers and imaging into one personalized medical strategy, supported by our AI-powered clinical intelligence system.
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The LifeLab Protocol provides the framework. Your care is tailored to your individual risks, goals and physiology.
Medicine built around you
Longer visits. Direct physician access. A deeper understanding of your health.
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LifeLab provides a highly personalized physician relationship with the time and continuity required to understand your health in depth.
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Rather than treating isolated numbers or individual problems, Dr. Eric Pifer uses the LifeLab Protocol, clinical judgement and our AI-assisted analysis to integrate your medical history, cardiovascular risk, metabolic health, fitness, body composition and personal goals into an ongoing plan.
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We perform advanced testing on most of our patients, but we tailor the testing plan to the individual. The goal is not more testing. The goal is better decisions.
Frequently asked questions
Visit
2100 Webster Street, Suite 401
San Francisco, CA 94115