What you need to do ‒ for high blood sugar (hyperglycaemia)
Call 999 or 112 straight away for medical help and say that you suspect hyperglycaemia.
While you wait for help to arrive, keep checking their breathing, pulse and level of response.
If they lose responsiveness at any point, open their airway, check their breathing and prepare to treat someone who’s become unresponsive.
What you need to do ‒ for low blood sugar (hypoglycaemia)
Help them sit down. If they have their own glucose gel, help them take it. If not, you need to give them something sugary like fruit juice, a fizzy drink, three teaspoons of sugar, or sugary sweets.
If they improve quickly, give them more sugary food or drink and let them rest. If they have their glucose testing kit with them, help them use it to check their glucose level. Stay with them until they feel completely better.
If they do not improve quickly, look for any other causes and then call 999 or 112 for medical help.
While waiting, keep checking their responsiveness, breathing and pulse.
What you need to do ‒ if you’re unsure whether their blood sugar is high or low
If you’re not sure whether someone has high or low blood sugar, give them something sugary anyway, as this will quickly relieve low blood sugar and is unlikely to do harm in cases of high blood sugar
If they don’t improve quickly, call 999 or 112 for medical help.
f they lose responsiveness at any point, open their airway, check their breathing and prepare to treat someone who’s become unresponsive.