This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
Pseudohyponatremia occurs in which of the following conditions 
Select and explain. 
A. SIADH, B. CHF, C. Hyperlipidemia, D. Severe dehydration
C: Hyperlipidemia
Answer: C: Hyperlipidemia 
Explanation: Ceain conditions that interfere with laboratory tests of serum sodium concentration (may lead to an erroneously low measurement of sodium. This is called pseudo hyponatremia. a. Hyperlipidemia b. Hyper paraproteinemia (Multiple myeloma) c. Severe hyperglycemia (DKA, NKHOC) ref - harrison's internal medicine 20e pg301