What is the best way to get blood off a passport and will it still be valid?

o.k i checked on google , try to use a paper towle to pat it with and some hydrigen peroxide,

I think he's likely to have to splash out £72 on a new passport - using chemicals like peroxide on the passport is almost certain to mess up the security features on the passport - security printing, effects under ultraviolet light, etc, which will bring him very unwelcome attention from the immigration personnel and security staff.

Treat it as a lesson to avoid getting into fights!

If I was you or your son, I would 'accidentally' put his passport in the washing machine. Either he will have to pay £72 for a new one ...or he won't.

Either way, it is going to look a whole lot better than presenting a blood-stained passport. Don't you think?

Unless he can get it clean, he should get a new one. Travelling abroad with a blood soaked passport may draw attention.

Europe should be fine. strict countrys like thailand, malaysia you will have probs as they require specifically good condition passports unless you have a visa for that country which isnt covered in blood.