Final answer:
The time it takes for a regular referral to be approved varies, usually taking a few days to a few weeks. Urgent referrals are expedited and can be approved within a day or two.
Step-by-step explanation:
The time it takes for a referral to be approved can vary depending on whether it is a regular referral or an urgent referral. In general, a regular referral may take anywhere from a few days to a few weeks to be approved. On the other hand, an urgent referral is typically expedited and may be approved within a shorter period of time, such as within a day or two.