2 Weeks Of Progressively in Pediatrics — Case | Pediatric Gastroenterology | SMLE Q#16523
SMLE Question #16523
Pediatrics
Pediatric Gastroenterology
Objective: OBJ-289
Last updated: February 2026
A 2-month-old boy is brought to a pediatric clinic for 2 weeks of progressively worsening, non-bilious vomiting after feeds. He now vomits after every feeding and has dropped from the 50th to the 25th weight percentile. His mother reports fewer wet diapers. Examination shows sunken fontanelle, decreased skin turgor, and a small, firm, mobile epigastric mass. Which of the following is the most likely laboratory finding in this patient?
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