but as they drop, the possibility increases
Most of us are monitored at 4 week intervals, minimum. This includes complete blood
count, comprehensive metabolic panel, and some doctors, including mine, did monthly viral load tests. They should also monitor thyroid periodically; every three months is generally sufficient, unless you have existing issues. Thyroid function can be checked with TSH testing. If you have problems with Hgb, neuts, platelets, semi-monthly labs might be a good idea.