What are the blood tests needed to verify that the high blood pressure isn't due of kidney, liver or adrenaline?

Liver does not cause hypertension. Kidney failure manifested elevated serum creatine would be sufficient. Adrenaline is more involved and may require 24 urine collection. For adrenaline based pathology: https://www.uclahealth.org/medical-services/surgery/endocrine-surgery/conditions-treated/adrenal/pheochromocytoma/pheochromocytoma-treatment-diagnosis#:~:text=Because%20catecholamine%20relase%20var