Stop blaming your sleep, check these 8 instead

You live here now. You have figured out the bin collection schedule, you have learned not to eat at 7pm like a tourist, you have accepted that queuing is a loose concept, and you have a strong opinion about which supermarket has the good tomatoes. You have built an entire life here.

You are also, quite possibly, knackered in a way that nobody has been able to explain.

The standard yearly panel in Spain covers the essentials, which is exactly what it was designed to do, and then it stops. Eight markers sit just outside that standard list, and between them they explain most of what people actually complain about when they say they are tired, foggy, cold all the time, or simply not themselves.

We will tell you what those eight are, what each one reveals, and what to do with the numbers once you have them.

The eight that matter

1. Full blood count

The baseline of baselines, covering red cells, white cells and platelets, and it catches anaemia, infection and immune irregularities in one go. If you only ever run one test, this is the one, and it sits in every panel we offer because there is no sensible version of a health check that leaves it out.

What it catches that people miss: anaemia that crept in slowly enough that you adjusted to it without noticing, which is common in anyone with heavy periods, anyone eating very little red meat, and anyone training hard on a restricted diet.

2. Glucose and HbA1c together

Glucose is a photograph and HbA1c is a three month video, so running them together tells you both where you are right now and where you have been since spring. Glucose alone can look perfectly fine on a morning when you slept well and ate carefully the night before, while HbA1c quietly reports the other ninety days.

This pairing is the single most useful metabolic read you can get, because insulin resistance builds for years before a fasting glucose ever crosses a threshold, and by the time it does you have lost a decade of easy correction.

3. The full lipid picture, not just cholesterol

A standard cholesterol reading gives you total, HDL and triglycerides, which is genuinely useful and also incomplete, because what damages arteries is the number of particles carrying the cholesterol rather than the volume of cholesterol itself.

Two people can show an identical LDL number while one carries far more particles than the other, and the one with more particles is at meaningfully higher risk. This is why cardiologists increasingly look at ApoB, which counts those particles directly rather than estimating their contents, and why our General Health Panel includes the full breakdown rather than the headline figure.

4. Liver enzymes, all three

Your liver processes everything you put in your body, food, alcohol, medication, supplements, stress hormones, and it complains late and quietly. ALT, AST and GGT together show whether it is coping or quietly struggling, and GGT in particular reacts early to alcohol, which matters in a country where a glass of wine with lunch is simply how Tuesday works.

Nobody is suggesting you stop. The point is that you get to see the number rather than guess at it.

5. Kidney function, measured two ways

Creatinine on its own is a rough guide, while eGFR calculates your actual filtration rate and gives a far more precise answer. Worth knowing if you train hard, because intensive exercise temporarily raises creatinine and can make a perfectly healthy kidney look concerning on a single reading.

The kidneys are the organ nobody thinks about until they have to, and they give almost no warning, which is precisely the argument for checking them on a schedule rather than in response to a symptom.

6. Thyroid

An underactive or overactive thyroid imitates half a dozen other conditions, producing fatigue, weight changes that make no sense given what you are eating, mood shifts, hair loss, feeling cold in a warm room, and it is disproportionately common in women.

A basic TSH screen rules it in or out, though TSH alone can read as normal while the hormones your cells actually use sit low, which is why The Thyroid Panel Plus checks free T3 and free T4 as well as the antibodies that signal Hashimoto's, the most common cause of an underactive thyroid and one that shows in antibodies years before anything else flags it.

7. Vitamin D

Here is the part that surprises people who moved to Spain specifically for the weather: living somewhere sunny does not protect you from deficiency, because the UVB wavelength your skin needs to make vitamin D only arrives at a sufficient angle for part of the year, and between roughly October and March at these latitudes your skin produces very little regardless of how blue the sky looks.

This holds whether you are in Barcelona, Madrid, Valencia or Málaga. Add an indoor job, sensible sun protection, and a diet that is not heavy on oily fish, and deficiency becomes ordinary rather than exceptional. Low vitamin D shows up as fatigue, low mood, frequent minor infections and aching muscles, all of which people attribute to being busy, and it is one of the cheapest things to correct once you know the number.

8. Ferritin and serum iron

Ferritin is stored iron and serum iron is what is circulating right now, and the two answer different questions. This is the most commonly missed cause of persistent tiredness, because ferritin can be scraping along the bottom while haemoglobin still reads as normal, which means a basic blood count alone will pass you as fine while you feel anything but.

Many labs mark anything above 12 as within range, which is technically true and practically unhelpful, since most people need considerably more than that to feel energetic. If you are tired and everything else came back clear, this is the number to look at.

The next layer, if you want it

Once the eight are covered, there is a second tier worth adding depending on what you are trying to understand.

Fasting insulin with HOMA-IR is the earliest possible warning for insulin resistance and moves years before glucose does. hsCRP measures systemic inflammation and correlates with cardiovascular risk and with how well you recover from training. Testosterone in both total and free form matters for energy, mood and body composition in men and in women, and is routinely overlooked in women entirely. Morning cortisol gives a read on chronic stress load, which is useful if you feel depleted in a way that sleep does not fix. Homocysteine is an independent cardiovascular risk factor that rarely appears on a standard panel anywhere.

None of these are exotic and all of them are available without a referral.

How often is often enough

Once a year is the sensible floor for most people, which is why the phrase annual blood test exists at all.

Every six months makes sense if you are actively changing something, whether that is a diet overhaul, a new training block, a supplement protocol or a medication adjustment, because a six month gap is short enough that you can attribute a change to what you did rather than to the eighteen other things that happened in between. Without a comparison point you are guessing, and guessing is expensive in both money and time.

If a marker comes back out of range, that is not a verdict, it is a starting point, and the correct next step is a conversation with your doctor who now has actual numbers to work from rather than a description of how you have been feeling lately.

Where to get it done

We have locations in Barcelona, Madrid, Valencia and Málaga, and the process is the same in all four.

Our Basic health profile covers the blood count, glucose, cholesterol, liver enzymes, kidney function and a full urine screen, and starts at €45. The general health panel adds the full cholesterol breakdown, proteins, iron and the more precise kidney filtration rate. The Thyroid Panel Plus goes beyond the basic screen to the hormones and antibodies that a TSH reading alone will miss.

You choose the panel online, you see the full price before you pay, and you walk in during collection hours at whichever location is closest to you, without needing a referral to get through the door. Come in fasted in the morning, go and have breakfast afterwards, and get on with your day. Results vary by test, from the next working day to around a week for the more complex panels.

Then bring the numbers to your doctor and have a better conversation than you would have had otherwise.