Most people only get blood tests when something feels off. A doctor suspects an issue, orders specific tests, and uses the results to diagnose or rule out a condition. That's how the system was built: reactive, symptom-driven, focused on what's already gone wrong.
But what if you want to catch things early? What if you want to see how your body is actually performing, not just whether you're sick?
That's what proactive blood testing is about. Building a personal baseline, tracking changes over time, and using real data to make better decisions about training, nutrition, supplementation, and overall health.
The Problem with Reactive Testing
When you only test after symptoms appear, you're working with a limited window. You know something is off, and the blood work tells you what. But you don't know what "normal" looked like for you before things changed.
For example:
- Your ferritin comes back at 30 µg/L. Is that a drop from 120, or has it always been around there? Without a baseline, you don't know.
- Your testosterone is 14 nmol/L. That's within the reference range, but if it was 22 two years ago, that's a significant decline that the reference range alone won't flag.
- Your HbA1c is 5.6%. Technically not diabetic. But if it was 4.9% last year, that's a trend worth paying attention to.
Reference ranges tell you whether you fall within the broad population norm. They don't tell you what's normal for you. A personal baseline does.
What to Include in a Health Baseline
A strong baseline covers the systems that matter most and gives you numbers to track over time:
- General Health: CBC, comprehensive metabolic panel, urinalysis
- Nutrition: Vitamin D, B12, folate, ferritin, RBC magnesium
- Hormones: Total and free testosterone, TSH, free T4, cortisol
- Cardiovascular: Full lipid panel, ApoB, HbA1c, fasting insulin, homocysteine, Lp(a)
- Inflammation: hs-CRP, creatine kinase (CK)
How Often Should You Test?
For a baseline: once, to establish your starting numbers.
For tracking: every 3 to 6 months for most markers, depending on what you're monitoring and what interventions you've made.
Some markers change quickly (ferritin, CRP, vitamin D with supplementation). Others move slowly (HbA1c, ApoB, Lp(a)). Your testing frequency should match the marker's rate of change and the goals you're tracking toward.
Get Your Baseline
If you've been meaning to get blood work done, whether it's a full baseline or a handful of specific markers, there's no reason to wait for a symptom or a doctor's appointment to make it happen.