Dr. Yogesh Kumar Chhabra, a nephrologist at Fortis Hospital in Shalimar Bagh, emphasizes the importance of regular kidney testing for individuals who consume gym supplements. He recommends five essential blood tests to monitor kidney health every six months. These tests include serum creatinine, which indicates kidney filtering performance; blood urea nitrogen (BUN), which assesses nitrogen levels from protein breakdown; and the estimated glomerular filtration rate (eGFR), a crucial measure of renal function. Additionally, monitoring electrolytes (sodium, potassium, and chloride) is vital, as imbalances can signal kidney dysfunction, especially during intense workouts. Lastly, serum uric acid levels should be checked, as high levels can indicate kidney stress and contribute to kidney stones. Dr. Chhabra advises gym-goers to stay hydrated, manage protein intake, and avoid over-reliance on supplements, highlighting that whole food proteins are equally effective. He also dispels myths regarding protein intake and kidney failure, noting that excessive protein does not automatically lead to muscle gain without proper training.