Why Am I Exhausted When My Bloodwork Is Normal?
Nov 5, 2026
By Dr. Daniel Min, ND | Port Coquitlam, BC
Something I hear in almost every first visit is that people are tired and they don't know why. Whether that looks like crashing by mid-afternoon but feeling wired by the time you get into bed, or not getting restful sleep and having a hard time getting going in the morning, one thing in common is that they wish they had more energy. And so they go to their doctor, get some bloodwork done, and are at a loss because everything came out normal but they still have this lingering fatigue. If that sounds like you, I'd tell you what I tell everyone, which is to trust that feeling. A normal result only means nothing was off enough to flag. It doesn't tell you whether your numbers are where you actually feel your best.
What "normal" means on your report
That normal column on your lab report is a reference range. The lab builds it by testing a large group of people and taking the middle 95 percent of results, and if your number lands inside that, it gets called normal.
It's a good system for catching disease. If you were anemic or your thyroid had really slowed down, it would usually show. But it was never designed to tell you whether your number is where you feel good, and the people it's built from include plenty who are tired and stressed, just like you.
Where I'd look closer
Start with your iron. Most labs call a ferritin (your iron stores) of about 15 or higher "normal." So if yours came back at 18, you're not anemic and nothing gets flagged, but your stores are low, and that on its own can leave you tired, foggy and cold. For energy, I usually like to see ferritin somewhere around 50 to 100.
Then your thyroid. You were probably screened with TSH, and something like 3.8 falls inside the range. TSH is really your brain asking your thyroid to work harder, though. It doesn't show how much active hormone is reaching your cells, which is what Free T3 measures. If you're tired and cold and your TSH is near the top of the range, I'd want to see your Free T3, Free T4 and thyroid antibodies before calling it fine.
And your blood sugar. Your fasting glucose can stay in range for years while your body works harder and harder to keep it there, and fasting insulin is what shows that extra effort. I often see a glucose of 5.3 mmol/L, perfectly normal, sitting next to an insulin that's already high. I like to see fasting insulin under 40 pmol/L.
Ranges differ a bit between labs and the right target depends on you, so think of these numbers as a place to start the conversation.
What to ask next time
Next time your results come back, ask to see the actual numbers and where they sit in the range. Ask whether ferritin was checked or just hemoglobin, whether it was only TSH or Free T3 and Free T4 too, and whether fasting insulin was checked along with glucose.
Keep your own copy. When you can see your numbers and notice whether they line up with how you feel, you walk into your next appointment with a lot more to work with.
Book a free Health Strategy Session
If this article made you think of yourself or someone you love, book a free health strategy session with me at Evoke Medicine, at the Pomme Clinic inside Pomme Natural Market. It's a relaxed conversation about what's going on and whether a deeper look makes sense.
About Dr. Daniel Min, ND
I'm a Naturopathic Doctor in Port Coquitlam, and I focus on fatigue, stress and burnout. I grew up in a Korean-Canadian family and spent time working on farms in California and Korea, which is a big part of why I care so much about real food and the small details of everyday habits.
When we work together, I'll explain what your results mean and why each step matters, so you leave with a plan you actually understand.
This article is for general education and isn't a substitute for individual medical advice.
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