👉 Titers are small pieces of material used in medical research or clinical trials to indicate the amount of a drug, vaccine, or other substance that has been administered. These items are typically placed on a test tube or vial and labeled with the specific dose or concentration of the substance being tested. In terms of the medical field, titers are crucial for determining the efficacy and safety of drugs, vaccines, and other treatments in clinical trials. They allow researchers to compare different doses of a drug or