What is a titer? What is a Titer Lab Report?
A titer is a laboratory test that measures the presence and amount of antibodies in blood. A titer may be used to prove immunity to disease. A blood sample is taken and tested.
If the test is positive (above a particular known value) the individual has immunity. If the test is negative (no immunity) or equivocal (not enough immunity) you need to be vaccinated.
Many schools, hospitals and clinical institutions want a lab report that includes the test type, exact values, reference ranges and date.