I was tested on my 43 days, negative. the test was conducted in the biggest and most prestiged hospital in my area (Sichuan China).
it was tested by my vein blood, on the report written "HIV antigen and antibody combined test", but on the fee receipt, written "HIV chemical lightening test", and everybody in CDC also call it "HIV chemical lightening test".
My question is: is this test a DUO test, does it equate to 4th generation ELISA?