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This is the test that finally turned my advice into measurement on myself. Two changes came out of it that I would not have made on guesswork alone, and the data has guided everything since.
I've written about testosterone optimisation for years. I've covered the research, cited the studies, recommended the protocols. But I'd never actually run a comprehensive blood panel on myself until earlier this year.
That changed when I decided to test the Lola Health Male Health Blood Test. Forty biomarkers. At-home finger-prick collection. Results back within 48 hours.
Here's exactly what I found - and what it changed about how I approach my health.
Why I Finally Did It
I'm 40. I train four times a week. I sleep reasonably well. I eat mostly whole foods. On paper, I should be fine.
But "fine" isn't the same as optimal. And the only way to know what's actually happening inside your body - testosterone, thyroid function, inflammation markers, vitamin deficiencies - is to measure it.
The problem with going through your GP is the wait. The average NHS referral for a male hormone panel can take weeks, and GPs typically only test testosterone in isolation, not the full picture of what drives it (LH, FSH, SHBG, free testosterone). Lola Health tests all of it.
What the Panel Covers
The Lola Health male health panel checks 40+ biomarkers across six core categories:
Hormones - total testosterone, free testosterone, SHBG (sex hormone binding globulin), LH, FSH, oestradiol, prolactin, DHEA-S, cortisol
Thyroid - TSH, free T3, free T4, thyroid antibodies
Metabolic health - HbA1c, fasting glucose, insulin
Cardiovascular - total cholesterol, LDL, HDL, triglycerides, hsCRP (inflammation marker)
Nutrients - vitamin D, vitamin B12, folate, ferritin, iron, TIBC
Full blood count - red blood cells, white blood cells, haematocrit, haemoglobin
Most men only ever get a fraction of this from a standard GP appointment. The full picture matters because these systems interact. Low vitamin D suppresses testosterone. High cortisol crushes LH. Elevated oestradiol (even in men) tanks libido and drives fat gain. You can't optimise one without understanding the others.
The Collection Process
I'll be honest - I was mildly dreading the finger-prick. I've had proper venous blood draws before and they're fine. A self-administered lancet felt more nerve-wracking.
It wasn't. The kit arrives in a clean, minimal box with everything you need: a single-use lancet, collection tubes, a prepaid return envelope, and clear step-by-step instructions. The whole process took about 10 minutes.
Tips that helped:
- Warm your hands first (held them under warm water for two minutes)
- Prick the side of your finger, not the tip - less nerve density, bleeds more readily
- Let gravity do the work - hold your hand down and gently squeeze from the base of the finger
- Collect first thing in the morning, fasted, before any caffeine or exercise (this matters for accurate cortisol and glucose)
The sample was back at the lab within 24 hours. Results came through 36 hours after that via the Lola Health app.
My Results - What the Numbers Showed
I'm not going to share every number - this is about what's useful to you, not a full medical disclosure. But here's what stood out.
Testosterone - lower than expected
My total testosterone came back at 14.2 nmol/L. The reference range Lola uses is 8.0–29.0 nmol/L, so technically normal. But the research I've covered on this site consistently shows that optimal for a 40-year-old man is closer to 18–22 nmol/L. At 14.2, I was in range but not optimal.
More importantly, my SHBG was high - 48 nmol/L. SHBG binds testosterone and renders it biologically inactive. My free testosterone (the fraction your cells can actually use) was lower than total testosterone suggested.
Vitamin D - deficient
This surprised me. I eat reasonably well, I get outside, and I've been supplementing with 1,000 IU of vitamin D daily since last winter. My level came back at 38 nmol/L. Below 50 nmol/L is classified as deficient by NHS guidance. Below 75 nmol/L is considered insufficient by most research-oriented standards.
Vitamin D deficiency has a direct, documented relationship with testosterone suppression. A randomised controlled trial published in Hormone and Metabolic Research found that men supplementing with 3,332 IU of vitamin D daily for 12 months increased testosterone by approximately 25% compared to placebo. I'd been taking a quarter of that dose.
Thyroid - fine
TSH, free T3, free T4 all within optimal ranges. No issues here.
HsCRP - elevated
My high-sensitivity C-reactive protein came back at 2.4 mg/L. Below 1.0 is low cardiovascular risk. 1.0–3.0 is moderate risk. Above 3.0 is high. I was in moderate territory, which was worth knowing. Elevated chronic inflammation is one of the least-discussed testosterone suppressors - it directly inhibits Leydig cell function, the cells in your testes responsible for producing testosterone.
B12 - low normal
At 198 pmol/L, I was technically within range but at the bottom. Optimal B12 is generally considered to be above 300–400 pmol/L for cognitive function and energy. I eat meat regularly, which should mean adequate B12. The likely explanation is that I've been taking a proton pump inhibitor (PPI) for acid reflux intermittently - PPIs reduce stomach acid, which is required for B12 absorption.
What I Changed
Based on these results, here's what I adjusted in the 12 weeks following:
- Vitamin D dose increased to 5,000 IU daily - with vitamin K2-MK7 (100mcg) to support calcium metabolism
- Started zinc and boron supplementation - zinc supports testosterone synthesis; boron has been shown in studies to reduce SHBG, which was my main issue
- Dropped the PPI and switched to a prokinetic approach for acid management - HCL with pepsin at meals rather than blocking acid production
- Addressed inflammation by removing seed oils from my diet (switched to olive oil and butter for cooking) and adding omega-3 at 2g EPA/DHA daily
I retested 12 weeks later. Total testosterone: 17.8 nmol/L. Free testosterone: substantially improved. SHBG: down to 38 nmol/L. Vitamin D: 74 nmol/L. HsCRP: 0.9 mg/L.
None of this required medication. It required data.
The Lola Health App
Results arrive inside the Lola app, not as a PDF dump. Each biomarker shows your result, the reference range, and a plain-English explanation of what it means and what might affect it. The interface is clean and non-alarmist - it doesn't panic you with red flags, but it also doesn't obscure what you need to act on.
There's an optional GP review add-on where a doctor reviews your results and provides written commentary. I didn't use it for this test, but for anyone whose results flag something significant (elevated PSA, thyroid antibodies, or markedly low testosterone), it's worth doing.
Who Should Do This Test
Any man over 35 who's experiencing unexplained fatigue, low libido, poor recovery from training, brain fog, or mood issues should do a comprehensive blood test before trying anything else. Supplementation without data is guesswork. What works for low vitamin D doesn't help if your problem is high cortisol. What works for low free testosterone doesn't help if your LH is already suppressed from a pituitary issue.
The Lola Health panel gives you the full picture in 48 hours without waiting weeks for a GP referral.
"Normal" reference ranges hide a lot. A proper male panel with free testosterone, SHBG, hsCRP, vitamin D and B12 catches the issues a GP test rarely looks for. Test twice a year and pair the data with a plan you'll actually follow.
I test twice a year now - once in January (post-winter, when vitamin D is typically at its lowest) and once in July. The cost is less than a month of supplements I might be wasting without knowing whether I need them.
Check the Lola Health Male Health Panel →
Seb is a men's health writer and the founder of Male Optimal. All content is evidence-based and independently researched. This article contains affiliate links - if you purchase through them, we may earn a small commission at no extra cost to you.
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