If we see clear fluid draining from our client's nose or ears, there are two easy ways we can assess it for the presence of cerebrospinal fluid (CSF)... 1️⃣ - Check it for glucose! A positive glucose reading indicates the presence of CSF. 2️⃣ - Assess for "halo sign" - when CSF mixes with blood, it results in a double-ring pattern when placed on an absorbent surface (CSF will form a clear or yellow ring around the blood!) ✨ Follow Archer NCLEX Review for more nursing school and Next Generation N