There are usually no specific preparations required before receiving Class 4 laser therapy. However, it is recommended that patients wear loose-fitting clothing and avoid wearing jewelry or other items that may interfere with the treatment. Patients should also inform their healthcare provider of any medications they are currently taking, as well as any medical conditions they have that may affect their response to the treatment. It is also important to follow any instructions provided by the healthcare provider regarding the use of the laser, including how to position the body during treatment and how to protect the eyes from the laser light.