Sport-Check-Up -- Sports Performance Panel

Performance-oriented blood panel designed for athletes and active individuals, covering haematology, metabolic health, thyroid function, and key micronutrients (vitamin D, ferritin, magnesium, calcium). Identifies the nutritional deficiencies, hormonal imbalances, and metabolic limitations that most commonly impair athletic performance and recovery. Approximately EUR 103 under GOAe 1.0x rates.

The Sport-Check-Up addresses the specific laboratory needs of recreational and competitive athletes. Training load, body composition targets, and dietary restrictions create unique metabolic demands that routine screening panels miss. The large blood count screens for exercise-induced anaemia -- a condition distinct from iron-deficiency anaemia that results from plasma volume expansion, mechanical haemolysis (footstrike haemolysis in runners), and intravascular shear forces during high-intensity effort. Sports anaemia is characterised by low haemoglobin with normal or near-normal iron stores and requires different management than true iron deficiency. Ferritin is the most reliable marker of iron stores and is critical for athletes because iron depletion impairs oxygen transport and aerobic performance well before frank anaemia develops. Endurance athletes, particularly menstruating women and vegetarians, face elevated risk. Optimal athletic performance requires ferritin above 30-50 ng/mL -- a higher threshold than the standard clinical cutoff of 15 ng/mL. Vitamin D3 25-OH is essential for calcium absorption, bone mineralisation, muscle function, and immune regulation. At Hamburg's latitude (53.6 degrees N), cutaneous vitamin D synthesis is negligible from October through March. Deficiency is associated with stress fractures, impaired muscle recovery, increased upper respiratory infections, and reduced testosterone production in male athletes. TSH (thyroid-stimulating hormone) screens for thyroid dysfunction, which directly affects metabolic rate, energy expenditure, body composition, and thermoregulation. Subclinical hypothyroidism -- elevated TSH with normal free hormones -- can present as unexplained fatigue, weight gain, cold intolerance, and impaired training adaptation. Magnesium participates in over 300 enzymatic reactions including ATP production, muscle contraction, and protein synthesis. Deficiency causes muscle cramps, fatigue, and arrhythmias. Calcium supports bone density and neuromuscular function. The full lipid panel and fasting glucose provide metabolic context, while liver enzymes (GOT, GPT, GGT) screen for hepatic stress -- noting that GOT (AST) is physiologically elevated after intense exercise due to skeletal muscle release. At approximately EUR 103, this panel provides the targeted micronutrient and hormonal data that sports medicine physicians typically order at substantially higher GOAe multipliers.