I tried using an ELISA kit to measure ACE2 in human plasma, however there was no detection. I would like to know if there are more sensitive and easily accessible methods for measuring ACE2?
You can try this document. Chapter Measurement of Angiotensin Converting Enzyme 2 Activity in B...
You can also use the radio inhibitor binding assay for human serum ACE. It is a simple, sensitive and specific assay which I find interesting. Just give it a try