If a person has received the IPV series, is there a titer, or some other immunity check that is offered to check immunity years later instead of getting another booster (in case the person goes into front line work or laboratory work)?

According to the CDC, you should refer to records to confirm vaccination status. If records are missing or you’re not sure you received the vaccine, err on the side of caution and complete the vaccination series. If you’re a health care worker at risk, you should get a lifetime booster.