If the client is less than 7 days late for a repeat injection, she can receive her next injection. No need for tests, evaluation, or a backup method.
A client who is more than 7 days late can receive her next injection if:
She has not had sex since 7 days after the scheduled date of her injection, or
She has used a backup method or has taken emergency contraceptive pills (ECPs) after any unprotected sex since 7 days after the scheduled date of her injection.
She will need a backup method for the first 7 days after the injection
If the client is more than 7 days late and does not meet these criteria, additional steps can be taken to be reasonably certain she is not pregnant (see Further Options to Assess for Pregnancy).
Discuss why the client was late and solutions. If coming back on time is often a problem, discuss using a backup method when she is late for her next injection, taking ECPs, or choosing another method.