What is low blood sugar? Diabetes Home Blood Sugar What are blood sugars? Why your blood sugars change When to check your blood sugars What do your blood sugars mean? Low blood sugar What is low blood sugar What does low blood sugar feel like? You think you have low blood sugar. What do you do? Why do you get low blood sugar? High blood sugar What is high blood sugar? Why do you get high blood sugar? What does high blood sugar feel like? What to do when you have high blood sugar You may need to go to the hospital when you have high blood sugar How to check your blood sugar How to use a blood sugar meter CGM Libre You do your finger prick. Your meter has a number on it. When the number is less than 4 you have low blood sugar. Like when the number starts with 3 or 2 or 1 You must eat sugar. Low blood sugar makes you sick. When you do not treat your low blood sugar you can pass out. You need a special needle. The ambulance or doctor must give it to you. Back Diabetes Home Next This is general information. Talk to your doctor for information made for you.