How to prepare for a bone density scan

Most DEXA appointments do not require fasting or an injection. Instructions can vary by centre, so use the directions supplied with your booking if they differ from general guidance.

Tell the service if you may be pregnant, recently had a test involving contrast material, or have metalwork, previous surgery, or a fracture near the planned measurement site. Contrast remaining in the body or structural changes can affect image interpretation.

Mention pain, limited mobility, or difficulty lying flat before the appointment. Staff can plan safer transfers, allow supportive positioning, and decide whether a different bone site should be measured.

Choose loose clothing without zips, buckles, underwires, or other metal around the hip and spine, or expect to change into a gown. Bring the referral, identification requested by the centre, a current medicine and supplement list, and earlier bone density reports when available.

Do not stop prescribed medicines unless the requesting clinician or imaging service specifically instructs you to do so. Ask the centre how to handle calcium supplements on the appointment day because local protocols may differ.

Arrive with enough time to discuss recent imaging and mobility assistance. During the examination, follow positioning instructions and tell the radiographer if remaining still causes pain.

Contact the imaging centre before attending if pregnancy is possible, you recently received contrast material, or illness prevents you from lying safely on the table. A routine scan should not delay assessment of an acute injury. Seek urgent care after a fall if you cannot bear weight, notice deformity, or have severe back pain with new weakness, numbness, or bladder or bowel changes.

Confirm which body sites will be scanned, whether you should alter any supplements, and whether previous images are needed. If you use a wheelchair or need help transferring, ask what assistance and equipment are available at the centre.