Hello to all , Can I just ask a quest to get started. I have CBS C699T AG +- Hetero , CBS N212N AG +- Hetero As I understood this can cause to much ammonia. Unfortunately here in Belgium MD’s are only willing to do ammonia testing if you have a Hepatic problem. So I have problems having my ammonia tested. My question can give my (BUN) blood urea nitrogen me a clue. Should it read high because much ammonia is produced and thus turned into BUN. OR can my (BUN) be low-normal bacause the ammonia is not well enough converted to (BUN) because of the SNP’s. OR in the info sources , when they talk about ammonia do they in fact mean BUN but is the name ammonia more commonly used in the US , even if not the same as Bun Urea. Thanks for advice.