Advanced Sports Performance Panel

With twenty markers, the volume of blood required exceeds what a standard fingerstick dried blood spot card can reliably provide. A venous draw by a mobile phlebotomist collects a sufficient volume for all markers to be run on fresh serum or EDTA plasma, ensuring accuracy and preventing the need to repeat the collection. The phlebotomist visits your home or workplace at a time you choose, typically within 48 hours of booking.

IGF-1 (insulin-like growth factor 1) is the primary effector hormone of growth hormone and drives muscle protein synthesis, satellite cell activation, and tissue repair after training. It tends to be higher in individuals who train consistently, sleep adequately, and consume sufficient protein and calories. Chronically low IGF-1 in an athlete is often a sign of energy deficiency (relative energy deficiency in sport, or RED-S), inadequate sleep, or suppressed growth hormone output. Optimising IGF-1 does not require pharmaceutical intervention; it is often achievable through dietary, sleep, and training adjustments.

Sex hormone-binding globulin (SHBG) is a protein that binds testosterone in the bloodstream, making it biologically inactive. Total testosterone measures all testosterone, including that bound to SHBG. Free testosterone — calculated or directly measured — represents the fraction available to enter cells and exert anabolic effects. Athletes with high SHBG can have a seemingly normal total testosterone but a functionally reduced free testosterone, which limits muscle protein synthesis and recovery. Factors that raise SHBG include high oestrogen relative to androgens, liver stress, and very high fibre diets.

Blood biomarkers are one input among many when adjusting a training programme. Low ferritin or haemoglobin might prompt a reduction in training volume alongside nutritional intervention. Suppressed testosterone with elevated cortisol supports an argument for a deload week. Elevated hs-CRP might indicate that recovery practices (sleep, nutrition, modality) need attention. However, blood data should always be integrated with performance metrics, perceived exertion, and recovery scores rather than acted upon in isolation. Your physician commentary will flag actionable findings.

Most competitive athletes run this panel twice a year: once at the start of the pre-season preparation block and once mid-season or at a pre-competition taper phase. This cadence captures the baseline and monitors for accumulated fatigue or micronutrient depletion that might otherwise go undetected until performance declines. Some athletes who track closely opt for quarterly testing; the cost-to-insight ratio remains high because each panel is being compared against a growing longitudinal dataset.

Serum magnesium is a relatively insensitive marker of total body magnesium because the body tightly regulates serum levels even when intracellular stores are depleted. A low serum magnesium is therefore significant and warrants dietary intervention or supplementation. Symptoms of magnesium deficiency in athletes include muscle cramps, poor sleep quality, palpitations, and reduced exercise tolerance. Athletes who sweat heavily, consume large amounts of caffeine, or follow a low-dairy diet are at elevated risk. Magnesium glycinate or malate supplements are generally better tolerated than magnesium oxide.