Function Health Review (2025): Expanded Testing, My Results, Biological Age, Pricing + 1-Year Re-Test

Updated: Oct 2025

What You’ll Learn

• My real results across an expanded set of panels (stand panel + expanded nutrients + expanded autoimmunity)
• How Function’s app turns 100+ biomarkers into an Action Plan (foods, supplements, lifestyle)
• Pricing and what I actually paid, plus who this service is best for

My Results At-A-Glance

• Biological Age: 28.9 — 8.7 years younger than calendar age
• Biomarkers: 124 in range, 15 out of range, 12 improving since my first panel
• Steady: Glucose/insulin, kidney, and liver markers remain solid
• Focus next: Lipids (HDL/LDL balance) and raising my omega-3 index

My 1-Year Results Dashboard

Then (first test in Jan 2025): Baseline across 100+ biomarkers; lipids flagged as the biggest risk; omega-3 index low.

Now (re-test, ~10 months later): Biological Age 28.9 (still trending younger after Function’s 2025 calc update). 124 in range, 15 out, 12 improving. Core systems steady; lipids still my focus; omega-3s are the main lever.

What I changed: Swapped seed/veg oils → olive/avocado/tallow, kept strength 3×/week + zone-2 4–6×/week, upped fiber and whole-food proteins.

Action Plan (current):

• Enjoy more: gooseberries, 70%+ dark chocolate, horseradish/wasabi, pasture-raised eggs
• Limit: seed/veg oils (peanut, corn, safflower, palm, soybean)
• Top supplements: Omega-3s, fiber (β-glucan/konjac), CoQ10 (ubiquinol), plant sterols/stanols, berberine

Bottom line: Year one kept my Biological Age young and kept my core health steady; year two is about raising omega-3s and improving the HDL/LDL balance.

Introduction: Why Proactive Health Tracking Mattered to Me

Picture this: You walk into your routine physical, get the same basic blood panel you’ve been getting for years, and receive a thumbs-up from your doctor—yet something still feels “off.” That was me about 1.5 years ago. I was tired of one-size-fits-all recommendations and wanted to gain real, actionable insights into my health.

Enter Function Health. Intrigued by the promise of advanced blood tests, a proactive approach, and personalized guidance, I decided to sign up. I was 36 years old, but as I’d soon discover, Function Health would reveal my “biological age” to be 24.2, highlighting just how much more nuanced health tracking can be when you dive deeper. In this post, I’ll walk you through how I selected my packages, the two lab visits needed, and the surprising depth of insight I received—including 18 out of 125 biomarkers that warranted attention and a personalized action plan going far beyond anything a typical physical could offer.

1. My Initial Motivation and Search for Better Health Insights

I’ve always tried to maintain an active lifestyle—running, strength training, and keeping a balanced diet. However, my annual check-ups rarely went beyond basic blood panels, which left me with only partial glimpses into my overall health. I wanted to know far more than just my cholesterol and glucose levels; I wanted insights into inflammation markers, immune function, hormonal balance, and more.

When a friend recommended Function Health, I was intrigued by how they combine clinical-grade testing with user-friendly, actionable insights. I craved a personalized roadmap to guide everything from my diet to my exercise routine—something a standard doctor’s visit just didn’t provide.

2. What Is Function Health?

Simply put, Function Health is a comprehensive, app-driven health service that offers advanced blood work and pairs it with data-driven recommendations. Rather than waiting for issues to arise, Function Health aims to help users be proactive, identifying subtle imbalances early on. With its robust test panels and easy-to-interpret reports, Function Health closes the gap between routine check-ups and truly personalized healthcare.

3. My Experience: Scheduling, Testing, and Follow Up

Selecting My Packages

I started by opting for the standard $499 package, but I wanted even deeper insights. So I added two additional packages:

1. Extended Autoimmunity
2. Extended Vitamins, Minerals, & Nutrients

Together, these add-ons cost another $600, bringing my total to $1,099. It’s a bigger investment than a typical physical, but I was determined to get as close to a full-body “status report” as possible.

Lab Visits

Because I selected advanced panels, two lab visits were initially required, followed by a follow-up 6-12 months later:

• Visit 1: Covered core metabolic panels, CBC, lipid profile, and some vitamin checks.
• Visit 2: Focused on autoimmune markers, extended nutrient testing, and additional specialized checks.
• Visit 3: Focused on comparing where I am now to my previous baselines, to understand how I'm improving.

Scheduling each visit was easy. Function Health sent me reminders about fasting requirements, and I could choose times that fit my schedule and use their web interface to schedule with local labs like Quest Diagnostics.

Getting My Results

Roughly five business days after each visit, I received an alert through the Function Health app that my results were ready. The interface organized everything into categories—making it straightforward to see which biomarkers were normal and which needed attention.

4. Key Findings and Personalized Action Plan

Supports more testing at no extra cost 😄

Summary of Areas for Improvement

Of the 125 biomarkers tested, 18 were (barely) outside the optimal range, pointing to a few key concerns—most notably in areas related to immune system regulation and certain cardiovascular risk factors. While none of these markers were critically alarming, they highlighted potential areas where I could focus my efforts, such as supporting immune health through diet and exercise, and making adjustments to improve my blood lipid profile.

Positive Indicators

Fortunately, many of my core markers were well within healthy ranges. This included stable metabolic markers, effective blood sugar management, and balanced levels of key vitamins and minerals—all suggesting a generally solid foundation to build upon.

My Personalized Action Plan

1. Dietary Adjustments

• Eat More: Herring, mackerel, salmon, tomatoes, and adzuki beans.
• Eat Less: Peanut oil, corn oil, safflower oil, palm oil, and soybean oil.

2. Top 5 Supplement Recommendations

1. Omega-3 Fatty Acids
2. Red Yeast Rice
3. Berberine
4. Fiber: PGX (Konjac fiber or glucomannan)
5. Coenzyme Q10

By following these guidelines—designed to optimize both immune and cardiovascular health—I have a practical roadmap for closing any gaps and enhancing my overall well-being.

Supports more testing at no extra cost 😄

5. Who Function Health Is Best For

• Health-Conscious Individuals: If you want more than a cursory overview of your health, Function Health provides in-depth biomarker analysis.
• Individuals Managing Chronic Conditions: Whether it’s autoimmune issues or high cholesterol, the expanded test panels and detailed reports offer unparalleled insight.
• Fitness Enthusiasts and Athletes: Monitoring hormones, nutrients, and cardiovascular markers can help you optimize training and recovery.
• Preventive Care Seekers: Rather than waiting for symptoms, Function Health spots potential trouble areas early, allowing you to adjust your lifestyle before problems escalate.

6. Major Features and Benefits

6.1 Comprehensive Testing

From core metabolic panels to extended autoimmune checks and nutrient testing, Function Health’s offering is far more expansive than standard labs. Having 125 biomarkers analyzed is no small feat—and it ensures nothing important slips through the cracks.

6.2 Personalized Insights

Each out-of-range marker came with a customized recommendation—a refreshing break from the typical “your labs look fine” phone call. Function Health’s approach is direct and actionable, helping me pinpoint exactly how to address suboptimal markers.

6.3 User-Friendly Interface

Complex lab data can be overwhelming, but the Function Health app simplifies it with:

• Color-Coded Charts: Instantly spot which markers are in or out of range.
• Plain-English Explanations: No more medical jargon you need a degree to decipher.
• Easy Organization: Biomarkers are grouped by category (e.g., cardiovascular, immune function) for straightforward navigation.

6.4 Proactive Health Management

Unlike traditional healthcare models that focus on reacting to issues, Function Health encourages a preventive mindset. By highlighting risk factors early, it empowers you to make changes well before your health is compromised.

6.5 Trend Tracking Over Time

Think of Function Health as a living record of your health journey. By testing periodically (every 3–6 months, for instance), you can see how changes in diet, exercise, or supplements directly affect your biomarkers.

7. Pricing and Plans

My total expenditure was $1,099, broken down as follows:

• Standard Package: $499
• Extended Autoimmunity + Extended Vitamins, Minerals, & Nutrients: $600

Yes, it’s more than a typical physical, but the depth of insight is incomparable. Some insurance plans may cover certain panels, so it’s wise to check your provider’s policies.

8. Ease of Use and Overall App Design

Navigating the Function Health platform felt seamless from start to finish:

1. Dashboard Overview: Gives a snapshot of your most recent results, focusing on any markers needing attention.
2. Detailed Breakdowns: Each biomarker is accompanied by reference ranges, trend graphs, and recommended next steps.
3. Notifications & Reminders: The app ensures you stay on top of test scheduling and new result alerts.

Even for someone with minimal tech experience, it’s very approachable and intuitive.

9. Pros and Cons from My Perspective

Pros

1. Deep-Dive Analysis: Covers far more than standard cholesterol and glucose checks.
2. Actionable Guidance: Dietary recommendations, supplement suggestions, and lifestyle changes are all laid out clearly.
3. Proactive Health Focus: Spot issues before they worsen—great for peace of mind.
4. Intuitive UI: The design is clean, making complex medical data easy to interpret.
5. Personal Touch: The results felt personalized, highlighting strengths as well as areas needing attention.

Cons

1. Multiple Lab Visits: Advanced tests may require more than one trip to the lab.
2. Cost: At $1,099, it’s more expensive than a standard physical if insurance doesn’t assist.
3. Location Limitations: Depending on where you live, you may have limited lab options.

10. Frequently Asked Questions (FAQs)

1. What is Function Health in one sentence?
   A comprehensive blood testing service with clinician review and an app that turns 100+ biomarkers into an actionable plan (foods, supplements, and habits).
2. How long did results take?
   From blood draw to full report: typically 7–14 days in my experience (both rounds).
3. Do I need to fast?
   Yes—12 hours fasting is recommended for consistent lipids and glucose/insulin markers. Water is fine; skip alcohol and intense workouts the day before.
4. How often should I re-test?
   For most people, every 6–12 months. If you’re actively changing diet/supplements for lipids, 6 months can be useful.
5. What changed in 2025 with Biological Age?
   Function made slight calculation updates; my trend remains “younger than calendar age.” Expect small number shifts, not big swings.
6. What did my year-over-year show?
   Core systems stayed solid (glucose/insulin, kidney, liver); lipids remain my focus. Biological Age is 28.9 (−8.7 vs calendar age).
7. What’s the omega-3 target?
   An omega-3 index ≥8% is a common goal in longevity circles; I’m increasing oily fish or a quality EPA/DHA supplement.
8. Which supplements did the app recommend for me?
   Top 5: Omega-3s, fiber (β-glucan/konjac), CoQ10 (ubiquinol), plant sterols/stanols, berberine.
   (Not medical advice; talk to your clinician.)
9. Do they accept HSA/FSA?
   Function purchases are often HSA/FSA-eligible—confirm with your provider.
10. Is this covered by insurance?
    Typically out-of-pocket. I treat it as a preventive/optimization expense.
11. Can I export my data and share with my doctor?
    Yes. You can export results and share with your PCP or specialist. I do this after each panel.
12. What happens if something is out of range?
    The report flags it, provides context, and a clinician adds notes. Use this to prioritize with your doctor.
13. Can vegetarians/vegans succeed with Function?
    Yes—focus on plant omega-3s + EPA/DHA algal oil, fiber, and targeted micronutrients per your panel.
14. How soon can lipids improve after changes?
    Meaningful shifts can appear in 8–12 weeks with consistent diet/fats, omega-3s, fiber, and training—then confirm on your next panel.
15. Is there mobile phlebotomy?
    Availability varies by location. I’ve used standard draw sites; mobile options may exist in some areas.
16. How does Function compare to InsideTracker?
    Function emphasizes breadth of labs + clinician notes; InsideTracker leans into coaching algorithms and athletic framing. I wrote a separate comparison for shoppers.
17. Do you use affiliate links?
    Yes. If my review helped, using my Function link supports more testing and updates—at no extra cost to you.
18. Any prep tips before the draw?
    Hydrate, sleep normally, skip alcohol the night before, avoid hard training 24 hours prior, and bring an ID.
19. Who is Function best for?
    People who want broad labs, clear flags, and actionable steps—from first-timers to data-driven self-optimizers.

11. Conclusion and Why I Strongly Recommend Function Health

After two lab visits, 125 biomarkers, and an in-depth look at my overall health, I can confidently say that Function Health outperforms a standard physical or a basic blood panel by a long shot. By identifying 18 suboptimal markers and providing a custom action plan, along with revealing a biological age of 24.2 (while I’m chronologically 36), it demonstrated the power of advanced, personalized data.

The real differentiator is how Function Health translates numbers into meaningful guidance. Whether it’s suggesting I eat more omega-3-rich fish and beans or introducing supplements like berberine and CoQ10, the advice is straightforward, research-backed, and easy to implement. If you’re serious about taking charge of your long-term health—and willing to invest in a detailed, proactive approach—I can’t recommend Function Health enough.

Ready to Elevate Your Health Game? Visit Function Health to explore their testing options and jumpstart your path toward personalized, data-driven health management. Once you see the benefits of these comprehensive panels, you’ll never look at a routine physical the same way again!

Disclaimer: I’m not a healthcare professional, and this review is based on my personal experience. Always consult a qualified medical provider for personalized advice.

Some links are affiliate. If this article was helpful, consider using my Function Health link to support more testing and reviews at no extra cost to you.