| Echocardiogram | Ultrasound of the heart: chamber size, wall thickness, valve function and pumping function. Also distinguishes normal athletic adaptation from findings that need a cardiologist. | ✓ | ✓ |
| Abdominal ultrasound | Liver, gallbladder, bile ducts, kidneys, spleen, pancreas and abdominal aorta. | ✓ | ✓ |
| Liver elastography | A stiffness measurement of the liver, taken alongside the scan, to assess fatty change and early fibrosis. | ✓ | ✓ |
| Full blood count and ESR | Haemoglobin, red cells, white cells and platelets, with an inflammatory marker. Anaemia, infection and the background inflammation that follows heavy training blocks. | ✓ | ✓ |
| Iron, TIBC and ferritin | Iron stores and iron transport. The most common correctable cause of unexplained fatigue and stalled endurance sessions. | ✓ | ✓ |
| Kidney function and electrolytes | Urea, creatinine, eGFR, sodium, potassium, chloride and bicarbonate. Kidney function and hydration status, both of which shift with training load. | ✓ | ✓ |
| Liver function | Bilirubin, alkaline phosphatase, AST, ALT and gamma GT. Read alongside the scan, because training raises some of these from muscle rather than liver. | ✓ | ✓ |
| Calcium, phosphate, magnesium, uric acid | Bone and muscle chemistry, cramp and gout risk, and mineral status. | ✓ | ✓ |
| Total protein, albumin, globulin | Protein status and a general marker of nutrition and inflammation. | ✓ | ✓ |
| Glucose and HbA1c | Blood sugar now, and your average over the previous two to three months. Insulin resistance is common in people who look fit. | ✓ | ✓ |
| Cholesterol and triglycerides | Total cholesterol, HDL, LDL and triglycerides. Fitness does not exempt you from a lipid problem, particularly an inherited one. | ✓ | ✓ |
| TSH and free T4 | Thyroid function. Both an underactive and an overactive thyroid affect energy, weight, heart rate and recovery. | ✓ | ✓ |
| Vitamin D (25-OH) | Vitamin D status, relevant to bone density, muscle function and stress fracture risk. Frequently low in the UK, including in outdoor athletes. | ✓ | ✓ |
| Testosterone, free testosterone, SHBG, free androgen index | Androgen status and, importantly, how much of your testosterone is actually available to your body. | ✓ | ✓ |
| Prolactin | A pituitary marker. A significantly raised prolactin suppresses testosterone and points to a specific, treatable cause. | ✓ | ✓ |
| PSA | Prostate specific antigen, included in the male hormone profile. Tell the team before your blood is taken if you would rather not have it measured. | ✓ | ✓ |
| Apolipoprotein A1 and B, with ratio | A direct count of the particles that carry cholesterol, rather than the cholesterol they contain. Often the more useful number when a standard lipid profile looks acceptable. | – | ✓ |
| Lipoprotein (a) | A largely inherited, lifelong cardiovascular risk marker that a standard cholesterol panel does not detect. Measured once in a lifetime for most people. | – | ✓ |
| High sensitivity CRP | Low grade vascular inflammation, at a sensitivity a standard CRP does not reach. | – | ✓ |
| Lp-PLA2 (PLAC test) | An enzyme marker associated with unstable arterial plaque. | – | ✓ |
| GP appointment | History, training background, examination where appropriate, and your results explained by a doctor. | ✓ | ✓ |
| Medication and supplement review | Everything you take, prescribed or otherwise, reviewed alongside the findings. Sports supplements included, because several affect these results. | ✓ | ✓ |