What is required for a faxed prescription to be valid?

For a faxed prescription to be considered valid, it is essential that it has the prescriber’s manual signature. This requirement ensures that the prescription is authenticated by the prescriber and confirms their intent for the medication to be dispensed. Faxed prescriptions are often used for convenience, but to maintain the integrity and verification of the prescription process, the prescriber's manual signature is necessary. This helps prevent the potential for fraudulent prescriptions and ensures compliance with legal and regulatory standards concerning prescription authenticity.

In contrast, the other options do not fulfill the necessary criteria for a valid faxed prescription. Cash payment confirmation is not a requirement for the validity of a prescription itself. The typewritten format requirement does not apply as both handwritten and typed prescriptions can be faxed, provided the proper signature is included. Lastly, the prescription does not need to be sent by the patient; it can be sent directly from the prescriber’s office or pharmacy, making this option incorrect.