In the medical office where you conduct your BAC before flight there usually is a chart of what is required for each interval based on your age. Also the medical issued by the IAM group will write what additional tests that are required for your next medical.
The advice from the majority will tell you do not volunteer any information that is not required. You will open a Pandora's Box which may lead to more problems down the road.
There have been chaps who've shown up without any bloodwork as it was not indicated on their initial issued medical certificate. Check with others in your airline for additional information as each medical facility follows their own dictaes
Good luck
