△ Practitioner-reviewed

Your blood results.
Actually explained.

Send me your NHS or private blood chemistry results. I’ll tell you what they actually mean — what’s been missed, what the reference ranges aren’t telling you, and what to prioritise first. Written report within 7 working days.

Get your audit — £295 → How it works

One-off · Async delivery · No consultation required · 7 working days

Blood Chemistry

Health Audit

^£295

One-time · Written report · 7 working days

✦Each marker against your lab’s range and an evidence-graded working band

✦Pattern identification across all markers

✦Priority findings — what matters most

✦Plain language — no clinical shorthand

✦Recommended next steps

✦Written by Stephen Duncan MSc FDN-P

Get your audit →

What actually happens with your blood results

Your doctor said they were normal.
That’s not the same as fine.

Most lab reference ranges describe where 95% of a reference population sits. They tell you whether a result is unusual, not whether it is ideal, and some are set wider than the evidence supports: a ferritin of 14 µg/L can pass a lab’s range even though below 30 is the guideline threshold for iron deficiency. A result inside the range can still be relevant to your energy, thyroid, blood sugar and hormones, and some are worth a closer look.

And that’s before we get to the markers that simply aren’t tested, the panels that aren’t run consistently from year to year, or the results that are never discussed because nothing flagged as abnormal — even when the trend across four years tells a completely different story.

“Ferritin came back at 14. GP said it was in range. She’s been exhausted for three years, losing hair, and can’t concentrate past noon.”

△ 14 μg/L (= ng/mL) is below the guideline threshold for iron deficiency (30 μg/L) even though some lab ranges pass it. My clinical target is 50–100 μg/L — a target, not a validated range.

“Fasting glucose was elevated in 2022. Nobody mentioned it. HbA1c flagged as pre-diabetic in 2026. Four years of progression that could have been addressed.”

△ Trend analysis across years reveals what single results miss

“TSH normal but free T3 low. Low FT3 can follow illness, undereating or stress; it’s a reason to look further, not a diagnosis.”

△ TSH alone gives a partial picture: read it with free T4, free T3 and your symptoms

“Sent for bloods without fasting instructions. Glucose and triglycerides read differently fasting and fed. The result is in range, but without knowing whether you’d eaten it’s harder to interpret.”

△ The report notes whether each sample was fasting, and reads it accordingly

What you receive

A written clinical report.
Not a printout with arrows.

The Health Audit is a practitioner-written report — reviewed and written by Stephen Duncan MSc FDN-P — interpreting each blood marker against your lab’s reference range, plus an evidence-graded working band where one exists — each labelled as guideline, outcome-based, or my clinical target, identifying patterns across markers, and giving you clear priority findings with recommended next steps.

Marker-by-Marker Reading

Every marker you’ve sent, read against your lab’s range and, where one exists, a working band. Each band says where it comes from: a guideline, an outcome study, or my own clinical target, which no trial has validated. Flagged as within band, outside band, or worth investigating, with a plain-language explanation.

Pattern Identification

The patterns that emerge across multiple markers — thyroid conversion patterns, blood sugar regulation, inflammatory load, iron and anaemia patterns, liver stress markers — that aren’t visible when you look at each result in isolation.

Priority Findings

The two or three things most worth your attention, ranked by clinical significance. Not a list of everything outside a band — a clear hierarchy of what to address first and why.

Recommended Next Steps

Honest recommendations: self-care actions where appropriate, further testing worth considering, and a clear indication of whether a more comprehensive clinical investigation is likely to be useful for your situation.

“Sometimes the most useful thing I can tell you is that nothing needs doing. If that’s what your results say, that’s what your report will say.”

Stephen Duncan MSc · FDN-P · Founder, Detective Health

The process

Four steps. Seven working days.
No appointment needed.

Purchase

Buy the Health Audit through Gumroad. You’ll receive a confirmation email immediately with submission instructions.

Send your results

Email your results to stephen@detective-health.com. PDF, photo, or typed values — the submission guide covers exactly how to get and share your results. If you’d rather not email health results, ask and I’ll send a secure Practice Better upload link.

Clinical review

Stephen reads each marker against your lab’s range and an evidence-graded working band where one exists, identifies patterns, and writes your personalised report. No templates. No automation.

Report delivered

Your written report arrives by email within 7 working days. Clear, plain-language findings you can act on — or take into your next GP appointment.

Getting your NHS results — a quick guide

You have a legal right to your NHS blood results. Here’s the quickest way to get them:

NHS App (fastest)

Download the NHS App → Health record → Test results. Screenshot or PDF export each result panel. Most practices display results within 24 hours of processing.

Patient Access / SystmOnline

If your practice uses Patient Access or SystmOnline, log in, go to Medical Record → Test Results. Download as PDF where the option exists.

Ask your GP receptionist

Request a printed copy of your results at reception. You’re entitled to them. If they ask why: “I’d like to keep a personal record.” No further explanation required.

Sending them to us

PDF is best. Clear photos are fine. If results span multiple visits, include them all — trend analysis across time is often the most revealing part. Email to stephen@detective-health.com with your order reference.

What the audit adds

The same results.
Read together.

A lab report checks each marker against a population range and flags what falls outside it. The audit reads the markers together, shows where each working band comes from, and tells you what, if anything, is worth doing next.

What a lab report shows

⊖Each marker against a population range

⊖Flagged or not

What the audit adds

✦Markers read together

✦Working bands with their source shown

✦Fasting status checked

✦Trends across years where you have them

✦Missing markers named

✦Two or three priorities, or none

Why more tests aren’t more answers: The Test Isn’t the Investigation →

Common questions

Before you order.

Can I send private blood results as well as NHS?

Yes. Results from Randox, Medichecks, Thriva, Bluecrest, Nuffield, or any private lab are all suitable. The more complete the panel, the more the audit reveals.

What if I only have a few markers?

Send what you have. Even a basic NHS panel — FBC, liver, kidney, thyroid, glucose — provides meaningful data when the markers are read together. More is better, but less is still useful.

Can I send results from several years?

Please do. Trend analysis across time is often more revealing than any single result. Patterns that are invisible in one panel become clear across three or four annual tests.

My results are on paper or a photo — is that ok?

Yes. Clear photos are fine — take them in good light, ensure all values and reference ranges are readable. If you have multiple pages, send them all. PDF is ideal if your practice offers it.

Is this a diagnosis or medical advice?

No. The Health Audit is an interpretation of your markers against your lab’s ranges and evidence-graded working bands, with clinical observations and recommendations. It doesn’t replace your GP. It gives you information to have a better conversation with them.

What if my audit suggests I need more comprehensive testing?

The report will say so clearly — and explain why. If the five-test TDG Programme is likely to be useful for your situation, I’ll say that honestly. There’s no obligation, and the £295 is credited against a programme if you go ahead within 60 days, not against single tests.

Your results have more
to say than you’ve been told.
Let’s hear them.

One-off written report. 7 working days. No appointment required.

Get your Health Audit — £295 →

Or email stephen@detective-health.com with any questions first

Want the full picture, with a consultation? See a sample Initial Consultation report (fictional client).

Your blood results.Actually explained.

Your doctor said they were normal.That’s not the same as fine.

A written clinical report.Not a printout with arrows.

Four steps. Seven working days.No appointment needed.

The same results.Read together.