I have name changed as this could be identifying.
We can access the genetic details of DD's disorder, should we need to, as the genetics service have this information, and the distant relative who had the testing to identify the gene consented to relatives having that information. This is a specific gene, in a specific disorder.
Of course you cannot have carte blanche to access birth family's medical records. I honestly can't comprehend how you think that could be acceptable.
From what you've posted, and I know you'll be being vague to remain anon as we all do, but from what you've posted, I'm not sure you're talking about a specific gene issue? No one has their entire DNA on record as routine, that would only happen as part of a research or other project, not in normal medical care. There is no identified gene involved in most psychotic illnesses. Something like 22q deletion syndrome can increase the risk of a psychotic illness, but your child would have other problems pointing to that genetic diagnosis.
It sounds like you're frustrated you don't have your child's family medical history. That is adoption, unfortunately. No matter how detailed the reports are, there are always other things to know, and uncertainties. It's frustrating, and one of the down sides of adoption. It's one of the reasons adoptees contact their birth families, to find out that medical history.
I'm amazed how much we know bout DD's birth family. That is useful for us, certainly. But if I was in BF position, I would be fuming at the breach of confidentiality. The CPR alone details BF's entire life and medical history, that's without the medical report, and the CPR was not shown to BF for them to consent to me knowing this. It makes me rather uncomfortable, really.
How would you feel about strangers having access to your medical record?
In summary, I'm not sure what you're after. If it's BF's DNA sequencing, then I'm baffled as to why you think this is appropriate or possible. If it's full access to BF's medical record, then again I'm baffled that you think this is appropriate without their consent. If you're just expressing frustration at this downside of adoption, then, yes, I hear you, and empathise, it's hard.
Your DD's problems are likely multifactorial. Distracting yourself focusing on having some sort of info about her DNA sounds like a dead end to me, and you sound busy enough dealing with a shitty situation, and I'm sorry about that.