The numbers at your check-up, and which ones matter early

Most people leave a routine check-up the same way. A handshake, a printout, a line like "mostly fine, keep an eye on one or two things." The printout goes into a drawer. The one or two things go unexamined.

This is a short guide to reading that printout yourself. Not to replace your doctor's interpretation — your lab's reference ranges and your physician's judgement always govern — but because the person with the most to gain from understanding those figures is you, and the best time to understand them is while they are still drifting rather than diagnosed.

The numbers worth knowing by heart

Fasting glucose. The amount of sugar in your blood after an overnight fast. Most Nigerian labs report it in mg/dL. Below about 100 is generally considered normal; the band from roughly 100 to 125 is where attention is earned. That band has a name — impaired fasting glucose — but the more useful way to think about it is direction. A single reading of 104 says little. A reading of 92 three years ago, 99 last year and 106 now says a great deal, and it says it years before any diagnosis would.

HbA1c. Where fasting glucose is a snapshot, HbA1c is a three-month average — the proportion of your red blood cells carrying sugar. Below about 5.7% is typical; 5.7% to 6.4% is the early-warning band. It is harder to flatter than a fasting test, which is exactly why it is worth requesting if your check-up does not include it.

Blood pressure. The most quietly consequential number on the page, and the one most distorted by the moment of measurement — a rushed morning, Third Mainland traffic, the reading itself. Around 120/80 is the textbook reference. What matters early is a resting pattern that sits persistently above it. One elevated reading in a clinic is noise. The same elevation every time, or on a home monitor across a quiet week, is signal.

The lipid panel. Four figures usually reported together: total cholesterol, LDL, HDL and triglycerides. The headline number gets the attention; the relationships often carry more information. High triglycerides sitting alongside low HDL, in particular, is a pattern worth asking your doctor about, because it often travels with the same underlying issue as the glucose numbers above — a body becoming gradually less sensitive to its own insulin.

Waist measurement. Unfashionable, unglamorous, and one of the most honest figures available, because it tracks the fat that behaves most badly — the fat around the organs. For men, risk in many populations begins climbing from about 94cm; for women, from about 80cm. A tailor can supply this number as reliably as a laboratory.

A note on labs, units and repetition

Three practical points save a great deal of confusion.

First, units. Nigerian laboratories report glucose in either mg/dL or mmol/L, and the two look nothing alike — a fasting glucose of 100 mg/dL and one of 5.6 mmol/L are the same result. Check the unit before you react to the number.

Second, labs differ. Reference ranges vary slightly from laboratory to laboratory, and so does measurement itself. For the purpose of watching your own trend, consistency beats prestige: the same lab, at roughly the same time of year, under the same conditions — properly fasted, not during an illness — tells you far more than a more famous lab visited at random.

Third, one number is never the story. Any single result can be noise: a poor night's sleep raises morning glucose; a stressful week raises blood pressure. Before drawing conclusions from a surprising figure, repeat it. A pattern across two or three measurements is information. A single reading is a rumour.

Why the early band matters more than the diagnosis line

Every one of these measures has a threshold at which a diagnosis is made and medication is discussed. Those thresholds matter — but they are the end of a long story, not the beginning of one.

The years in the early band are different in kind, not just in degree. In that window, the levers that move the numbers are still mostly behavioural: what you eat and when, how much muscle you carry and use, how you sleep, how your stress load is managed. The same levers exist after diagnosis too, but they operate alongside prescriptions rather than instead of them, and with less room.

Put plainly: the drifting years are the cheap years. Nothing about them feels urgent, which is precisely why they are so often spent waiting.

What to actually do at your next check-up

A routine check-up becomes far more useful with three small changes in how you approach it.

Ask for the actual figures. "Mostly fine" is a summary, not a result. Request the printout, or the emailed PDF, every time.

Keep your own record. One page, one line per year, the five measures above. Direction only becomes visible across years, and no clinic file is watching yours as closely as you can.

Ask one better question. Not "am I okay?" — the answer is nearly always yes, until the year it is not. Ask instead: "which of my numbers has moved since last time, and in which direction?" It is a question every doctor can answer, and it changes the conversation from reassurance to information.

Where coaching fits, and where it does not

None of the above requires a coach. A pen, a folder and an honest question do most of it.

Where structured help earns its place is in what comes after the noticing — building the eating, movement and recovery patterns that move those numbers, inside a life that already has a career and a family in it, and then measuring whether they actually moved. That is the work we do, always alongside your own doctor and your own lab results, never instead of them.

But start with the drawer. Find the last printout. Find the one before it. Put the numbers side by side, and see which way they are walking.