A 0.9% sodium chloride (NaCl) solution is considered isotonic with mammalian red blood cells (RBCs). This means it has the same osmotic pressure as the fluid inside RBCs, preventing cells from shrinking (crenation) or swelling (lysis). It's commonly used in IV fluids and medical labs.
What percent solution of NaCl is considered isotonic to mammalian RBCs?
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Question context
This question is part of 🧬 Biochemistry within the broader 🧬 Medical Science subject and appears in the SPSC – Sindh Public Service Commission preparation collection. Reviewing the answer together with nearby questions helps reinforce the underlying concept and identify how it may appear in competitive exams.