Not *that* NFL - NfL. (Yes, the Super Bowl is over. Maybe next year, Bills?! 😅) 🏈🧠 If you have MS and have ever wondered why your symptoms don’t always line up with what shows up on an MRI… this is for you. Neurofilament light chain (NfL) is a biomarker researchers are studying as a way to measure nerve damage activity in MS through a blood test. Why this matters 🧡: Sometimes there can be active nerve injury happening even when... → symptoms haven’t changed much → or MRI findings don’t tell