Owners ask about titers when they worry about over-vaccinating. It is a fair question for your vet.
What it measures
The test counts antibodies in a blood sample. A result above a lab's threshold may suggest the pet is protected against that disease. It is mostly used for the core viral diseases, such as distemper and parvovirus in dogs. A result is a snapshot, and conditions such as stress, medication or maternal antibodies in a puppy can affect it.
Where titers fall short
A titer does not tell the whole immune story, and it is not meaningful for every vaccine. Rabies is the key case: it is required by law for dogs in California, and the kennel asks for current proof of the rabies vaccine. Bordetella and influenza vaccines are also not measured by a standard titer. A titer is a conversation with your vet, not a loophole.
What it means for boarding
Happy Paws asks for records showing that vaccines are up to date and will not expire during the stay. If your vet uses titers in place of boosters for some vaccines, call 707-678-6600 before you book to ask how that result is handled. Do not wait until drop-off. The titer tests and boarding page explains how to ask.
Questions for your vet
Ask which diseases the titer covers, what number counts as protected, how long the result is valid and whether the lab report will show the date. Bring the written report to the kennel. For terms on the record itself, see DHPP and rabies certificate.
A cautious way to proceed
If you want to use a titer instead of a booster for some vaccines, do it as a plan with your vet, not on the day before a trip. Ask the kennel, in advance, whether a lab report will meet the record requirement. Keep up with required vaccines that titers do not cover. Always bring the lab report with the date, the antibody levels and the threshold the lab uses.
The core point: a titer tells you about the past few weeks, not the future. A vaccine on schedule gives a predictable date on a record.