Your Blood Test Results, Decoded — a free guide from Dr Sermed Mezher
Free guide · 10 pages

Your blood test results, decoded.

What a doctor actually looks for when your results come back, and why the arrows scare you more than they should.

  • What an arrow on your results really means
  • Why normal and healthy are two different things
  • How to spot someone selling you fear
  • Six questions that make an appointment count
Dr Sermed Mezher
Dr Sermed Mezher · MBChB (Hons)
A free guide

Your Blood Test
Results, Decoded

What a doctor actually looks for when your results come back, and why the arrows scare you more than they should.
This guide explains how to think about your results. It cannot tell you what yours mean.
10 pages · free
1B+ views across platforms Written by a practising doctor 10 pages Free forever
64%

A perfectly healthy person has a 64% chance of an "abnormal" result.

Test twenty markers on someone with nothing wrong with them, and the odds are better than even that at least one comes back flagged. Push it to a sixty-marker panel and it climbs to roughly 95%.

That happens because of how the ranges are built, rather than because of anything happening in your body. The guide explains why in plain English, and what it means for the panel someone is trying to sell you.

Inside the guide

Ten pages. No jargon.

It will not tell you what your results mean, because no guide honestly can. It teaches you how to read them, which travels a lot further.

No. 01

What "normal range" actually is

It is a line drawn around the middle 95% of healthy people, which means 1 in 20 healthy people land outside it by design. Once you see that, the arrows look very different.

No. 02

Normal is not the same as healthy

And abnormal is not the same as unhealthy. Both halves matter, and most people only ever hear one of them. Includes why a "normal" result can still be the wrong direction.

No. 03

How doctors actually read it

The three things I look at before I look at the arrow: the trend, how far outside it sits, and the person it belongs to.

No. 04

The panels, in English

FBC, U&Es, LFTs, HbA1c, thyroid, ferritin, CRP, vitamin D and B12. What each one is genuinely asking, and where each gets misread.

No. 05

The grift radar

The "normal but not optimal" move, the sixty-marker panel, and the one question that cuts through all of it: what decision would this result change?

No. 06

Six questions worth bringing

Appointments are short. These buy you the most information per minute, including the one that keeps the conversation going when your bloods come back clean.

Dr Sermed Mezher
MBChB (Hons) · Family Medicine
1 billion+
views across platforms
Who wrote it

A practising doctor who is tired of the fear industry.

I see the fallout in clinic constantly. People arrive frightened by a number that means very little, and occasionally people arrive relaxed about a number that means quite a lot. The common thread is that nobody ever explained what the results actually are.

So I wrote the guide I wish every patient had before they opened that envelope. Every claim in it traces back to the evidence, and it deliberately contains almost no numbers, because your lab's ranges are the only ones that apply to you.

And every week after

You'll also get Curbside Consult.

One thing worth knowing, every week, from a doctor who checks the sources. It takes about five minutes to read.

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  • The study behind it

    One piece of research in plain language, and whether it should change anything for you.

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    The clinical detail that stayed behind when the video was cut.

Issue No. 24 THIS WEEK
The cutting-room floor

The "flu" that was actually poisoned air, and the one question that catches it

In the video I mentioned that carbon monoxide mimics the flu. What I couldn't fit: the single question that separates the two at the kitchen table, and why the family pet is sometimes the first to tell you.

Plus this week: what a new sleep-and-dementia meta-analysis really shows, and the supplement headline that got its own study backwards.

Read in about 5 minutes

Read your results with a bit more confidence.

Ten pages, free, from a doctor who checks the sources. Plus one thing worth knowing, every week after.

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