Creatinine in Athletes: When Kidney Function Tests Mislead
Introduction Athletes represent a distinct population in whom creatinine measurements are frequently influenced by factors such as greater muscle mass,…
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Electrolytes in Athletes: What Your Blood Work Is Actually Telling You
Introduction: Electrolytes in Athletes Electrolytes in athletes play a central role in athletic physiology, and exercise does affect the body’s…
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EPO in Athletes: Erythropoietin Levels, Clinical Interpretation, and the Doping Divide
Introduction EPO in athletes sits at a contested intersection of sports medicine, clinical diagnosis, and anti-doping science. Endurance athletes speak…
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NT-proBNP in Athletes: Heart Failure Marker or Training Adaptation?
Introduction In clinical practice, NT-proBNP is often included in the evaluation of patients presenting with exertional breathlessness, including athletic individuals….
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RDW in Athletes: Red Cell Distribution Width As An Early Indicator of Iron Deficiency
Introduction: Why RDW in Athletes Is Often Overlooked In my clinical practice, the evaluation of anemia often focuses primarily on…
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Bilirubin in Athletes: Causes, Gilbert’s Syndrome, and Exercise-Induced Hemolysis
Introduction Bilirubin in athletes is observed more frequently than in the general population. In my clinical practice, isolated mild elevations…
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Haptoglobin in Athletes: The Hemolysis Detection Marker
Introduction Some of my patients may have heard of the protein haptoglobin, but it remains relatively unfamiliar—and even when recognized,…
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Vitamin B12 and Folate in Athletes: Beyond Anemia Prevention
Introduction In my experience, athletic patients are often well-informed about nutrition and vitamins. They are typically interested in tracking their…
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Preparing for Blood Test Athletes: Fasting, Timing, and Training Considerations
Introduction Many of my athletic patients follow highly structured training programs. Their routines often include near-daily workouts, carefully planned nutrition,…
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Reticulocyte Count in Athletes: Understanding Your Bone Marrow Response
Introduction In my practice, most athletes focus on hemoglobin and ferritin, with fewer paying attention to hematocrit. These markers are…
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Hepcidin and Iron Absorption in Athletes: Why Timing Your Iron Supplement Matters
Introduction Iron deficiency is one of the most prevalent nutritional problems in sport — yet many of my patients who…
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IV Iron for Athletes: When Infusion Makes Sense
Introduction Iron deficiency is common in athletic populations, with higher rates observed in female athletes and endurance disciplines. It can…
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Lactate Testing for Athletes: Beyond Blood Lactate Threshold
Introduction: Lactate Testing for Athletes A sensation familiar to almost everyone is the buildup of “lactic acid” in the muscles….
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Thyroid Function in Athletes: Why TSH Alone Isn’t Enough
Introduction: Thyroid Function in Athletes Athletes often come to my clinic due to slowed or stalled progress, fatigue, and lack…
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Which Blood Tests Do Athletes Actually Need? A Doctor’s Evidence-Based Guide
Introduction: Which Blood Tests Do Athletes Actually Need It’s completely understandable that athletes want to maximize their performance. That’s only…
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Soluble Transferrin Receptor in Athletes: sTfR as The Advanced Iron Marker
Introduction: When Your Iron Test Doesn’t Tell the Whole Story Interpreting iron status in athletic patients is often more complex…
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RBC Count in Endurance Athletes: What Your Blood Test Is Actually Telling You
Introduction In my physically active patients, one of the most important basic laboratory tests is the basic or complete blood…
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Hematocrit in Athletes: What Your Blood Really Tells You About Performance
Introduction: Hematocrit in Athletes Hematocrit in athletes is a parameter included in both basic and extended blood counts. It has…
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TIBC in Athletes: What Total Iron-Binding Capacity Really Tells You
Introduction Most athletes who get their blood work done know to look at ferritin and hemoglobin, but fewer understand how…
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Vitamin D in Athletes: An Evidence-Based Guide to Performance, Injury Risk, and Clinical Interpretation
Introduction: Vitamin D in Athletes Vitamin D status is frequently assessed in athletes, yet its interpretation remains a common source…
