What Tests an Athlete Needs: Training Control and Clearance

"Tests for an athlete" is really two different requests that constantly get mixed up. The first is official clearance: a certificate for a club, a competition, or the regulated medical exam. The second is self-monitoring: understanding why endurance dropped, whether you are overreaching, and whether recovery is on track. The test sets differ — we will cover both, plus the one rule whose violation gives athletes more "scary" results than any disease.

Sports clearance: how the in-depth exam works

Clearance for organised training and competition is regulated by Ministry of Health order No. 1144n. For amateurs and mass sport it is a doctor's exam with basic tests; for national-team and high-level athletes it is the staged in-depth medical examination (UMO): specialist consultations, resting and exercise ECG, echocardiography, a laboratory block. The entire structure has one purpose — not to miss conditions where intense exertion is dangerous, cardiac ones first. The certificate is issued by a sports medicine physician or a GP — and it is the doctor, per stage and sport, who defines the test set.

The amateur's self-monitoring base

If you train regularly and want an objective picture, the base looks like this:

Ferritin is the most underrated item here: runners and other endurance athletes burn through iron stores faster, and an "unexplained" loss of pace is often exactly this — while haemoglobin is still normal.

Recovery hormones: testosterone and cortisol

These are "on indication" tests, not for everyone: they are worth checking when overtraining is suspected — performance falling for weeks, broken sleep, rising resting heart rate. Testosterone reflects anabolic resource, cortisol the stress load; they are read together and over time, never as a single number. What actually moves testosterone — sleep, body composition, load — is covered in the guide on raising testosterone; a creeping resting heart rate is easy to track against the age-based heart rate norms.

The main rule: when to draw blood

The most common athlete's mistake is testing the morning after a hard session. CK rises severalfold after strength work or a long run, ALT and AST follow — and the form reads like "liver and muscle damage" in a perfectly healthy person. The rules are simple:

• 48–72 hours without heavy or unfamiliar load before the draw; after a marathon or a strength PR — up to a week;
• test in the morning, fasting, with your usual hydration;
• re-test a "scary" CK not the next day but after 5–7 days of rest.

Protein and creatine: the false "kidney damage"

The second classic trap is supplements. Creatine raises blood creatinine simply because creatinine is its breakdown product: a number above the reference with perfectly healthy kidneys. A high-protein diet adds urea on top. The result — a "kidney disease" form in a healthy athlete. What to do: tell the doctor about your supplements, and when in doubt assess the kidneys via cystatin C or an adjusted eGFR. To sort out which supplements make sense at all and how much protein is useful, see the guide to creatine and protein and the protein intake calculator.

Red flags: when you need a doctor, not tests

Some symptoms make lab testing a waste of time, because what you need is a physician:

• pain, burning or pressure in the chest on exertion — a cardiologist urgently, with an ECG and exam, not a lab visit;
• fainting or near-fainting during training;
• shortness of breath out of proportion to the load;
• dark "cola-coloured" urine after an extreme session — a sign of rhabdomyolysis, a medical emergency.

And if your joints ache and swell after training, that is its own route: which tests separate inflammation from overload is covered on the page about tests for joint pain.

The short version

For clearance — the exam and staged UMO under order 1144n, with the set defined by the sports physician. For self-monitoring — CBC with ferritin, biochemistry with CK, glucose, lipids, vitamin D, and hormones only when overtraining is suspected. Draw blood after 2–3 easy days and disclose your supplements — or you will get a "scary" form out of nowhere. Once the results are in, you can upload them for decoding — the service explains every value with your training in mind.