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Adaptation happens in recovery, not training. Measure your body's recovery status before loading it again.
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Targeted panel to assess post-training inflammation, muscle damage, oxidative stress, and immune function.
Recovery is where adaptation happens. Without sufficient biological recovery between sessions, training loads that would normally produce adaptation instead produce regression, injury, or illness. This panel quantifies the biological state of recovery using markers of systemic inflammation (hs-CRP), muscle integrity (creatine kinase), immune function (white cell count and differential), and cortisol-testosterone balance — the hormonal barometer of anabolic-catabolic equilibrium. It is designed to be run periodically within a training block, particularly after phases of high volume or intensity, to confirm that recovery is proceeding normally before increasing load again. The physician commentary contextualises each finding relative to expected post-exercise physiological ranges, not sedentary population norms.
Understand what each marker measures, why it matters, and what the science says — not just a list of numbers.
This panel is designed for adults who want a comprehensive, evidence-based picture of their metabolic health — not a GP referral panel.
Athletes mid-block who want to confirm recovery before increasing intensity
Anyone who has noticed signs of overreaching: persistent fatigue, poor sleep, mood changes, performance decline
Coaches monitoring athlete readiness at key points in a periodised training plan
Athletes who are frequently ill during or after competition phases
Recreational athletes returning to full training after time off
This panel captures a single time-point snapshot of recovery biomarkers; all markers are influenced by the timing and nature of the most recent training session, sleep duration on preceding nights, nutritional intake, and acute stressors. Creatine kinase and LDH are most informative 48 to 72 hours after the last hard session; collecting closer to exercise will produce artificially elevated values. Cortisol and testosterone are time-of-day dependent and are best collected in the morning before eating. The neutrophil-to-lymphocyte ratio is a non-specific inflammatory index; elevated values can reflect either excessive training load or intercurrent infection and must be interpreted in context. This panel does not include ferritin, thyroid markers, or micronutrients.
From order to physician-reviewed report in as little as three working days.
Home fingerstick kit or mobile phlebotomist.
48 to 72 hours after last hard session. Morning collection, lightly fasted.
Pre-paid Royal Mail envelope included.
Physician-reviewed with training-context commentary in 3 to 5 working days.
Three options designed to fit your schedule, location, and preference — all producing a laboratory-standard sample.
Adults 18+ in mainland UK. Not suitable if you have had a transfusion in the last 3 months.
Order anytime; kit dispatched within 24 hours Mon–Fri.
Allow 24–48 hours for sample transit on top of lab processing time.
Adults 18+ within 20 miles of a serviced city centre.
Mon–Sun, 06:00–20:00. Next-day booking typical.
Sample reaches the lab within 24 hours of collection.
Adults 16+ with photo ID. Paediatric draws by appointment at selected sites.
Mon–Fri, with Saturday hours at most metropolitan locations.
Samples processed same-day at the receiving clinic.
Every test is processed in a UKAS ISO 15189-accredited laboratory, overseen by GMC-registered physicians, and governed by UK GDPR. No overseas processing, no offshore data.
Follow these guidelines to ensure accurate, reproducible results. Most markers are sensitive to recent food, exercise, and sleep.
Can't find your answer? Our clinical support team is available Monday to Friday, 9am–5pm.
Contact supportOverreaching is a state of performance decline caused by accumulated training stress that has not been offset by sufficient recovery. Functional overreaching is short-term and resolves with a brief rest period; non-functional overreaching takes weeks to months to resolve and can progress to overtraining syndrome if ignored. Blood markers associated with overreaching include suppressed morning testosterone, elevated resting cortisol, elevated hs-CRP, and changes in white cell counts. No single marker is diagnostic, but a pattern across several markers alongside subjective performance decline and mood changes provides a strong clinical picture.
CK rises within 12 to 24 hours of intensive exercise, peaks between 24 and 72 hours, and typically returns to baseline within five to seven days. The magnitude and duration of elevation depend on training mode (eccentric exercise causes greater and longer elevation than concentric), training status (untrained individuals show greater post-exercise CK spikes than trained athletes for equivalent workloads), and the absolute intensity and volume of the session. A marathon or ultramarathon can produce CK elevations of fifty to one hundred times the upper reference limit. For monitoring purposes, collecting at the same time point post-training (e.g. always at 48 hours) improves interpretability.
Blood biomarkers can inform but not dictate training decisions. A pattern of normalising CK, hs-CRP returning to low-normal, and testosterone recovering toward baseline is consistent with readiness to resume hard training. However, subjective wellness markers — motivation, sleep quality, resting heart rate trend, perceived exertion at a given power output — should be integrated alongside blood data. Some athletes perform well with slightly elevated markers; others are impaired before markers leave the reference range. Longitudinal data from repeated testing is more valuable than any single time-point result.
Sleep is the most powerful and accessible recovery tool available. During deep sleep, growth hormone is released in its largest daily pulse, driving muscle repair and IGF-1 production. Poor or insufficient sleep (below seven hours) raises morning cortisol, suppresses testosterone, and impairs immune function — mirroring the hormonal signature of overtraining. If you repeatedly collect poor sleep before testing, your results will reflect the sleep deficit as much as the training load. Collecting after two or three nights of good sleep provides the most accurate picture of your true recovery status.
The open window theory describes a transient period of immunosuppression in the hours to days following intense endurance exercise, during which susceptibility to upper respiratory tract infection is elevated. While some aspects of the original model have been refined — it is now understood that exercise does not suppress immunity per se but rather redistributes immune cells from the blood to peripheral tissues — the practical observation that hard training blocks are associated with increased infection rates remains well supported. Monitoring white cell counts and particularly neutrophil-to-lymphocyte ratio during high-volume phases can help identify periods of immune vulnerability.
