Schedule the test for a time when your breasts are least likely to be tender. If you menstruate, that's usually during the week after your menstrual period.
Check with your insurance provider. Not all insurance companies cover 3D mammograms. Check with your insurance provider before your test so that you'll know what types of costs to expect. Your insurance company may cover the standard mammogram portion of the test, while you'll be responsible for the cost of the 3D mammogram portion.
Bring your prior mammogram images. If you're going to a new facility for your mammogram, request to have any prior mammograms placed on a CD. Bring the CD with you to your appointment so that the radiologist can compare past mammograms with your new images.
Don't use deodorant before your mammogram. Avoid using deodorants, antiperspirants, powders, lotions, creams or perfumes under your arms or on your breasts. Metallic particles in powders and deodorants could be visible on your mammogram and cause confusion.