blood test for stomach damage

[jen86]

what blood test shows if the stomach is damage from chickenpox?

 

[Thinktank]

There's no bloodtest that can check for "stomach damage". You need to visit a gastroenterologist and undergo a gastroscopy with maybe a biopsy to check if the varicella zoster virus is reponsible.
A 3-day stooltest might show bloodtraces when you have a bad case of gastritis.

How has your varicella zoster virus been diagnosed?