Síndrome de Gitelman heterocigoto sintomático en un jugador de béisbol profesional: un informe de caso

follow-up, the athlete reported less cramping and improved endurance; BUN was 17.4 mg/dL, creatinine was 1.20 mg/dL, and potassium was 4.59. This case highlights the diagnostic challenge posed by an incomplete GS phenotype in a high-performance athlete and the importance of correlating clinical, biochemical, and genetic findings. Heterozygous SLC12A3-associated salt-wasting physiology should be considered in athletes with persistent compatible symptoms and evidence of inappropriate renal electrolyte loss, while alternative acquired © 2026 the author(s), published by De Gruyter, Berlin/Boston.