Give each test a clear purpose

Blood tests depend on the care you need

The general federal laws checked on September 26, 2026 do not say everyone needs a blood test before getting a prescription.

State rules and a proper review of your health may still require tests. Some medicines have their own FDA safety programmes that can require tests; those programmes were outside this legal check.

Medical-board guidance calls on the clinician to complete, arrange or refer for tests that the assessment needs.

Ask what the result could change. Ask whether an existing result can answer the same question.

Know which checks belong to the plan

The Wegovy (semaglutide) label calls for blood-sugar checks before and during treatment for people with diabetes.

The label also calls for checking the pulse and checking the kidneys when unwanted effects could cause a large loss of fluid.

Routine thyroid blood tests or scans have uncertain value for early detection of the rare thyroid cancer named in the label.

Use these points as questions for the clinician. Ask which checks fit your own health history.

Follow the result all the way back

Before having a test, ask who receives the result, who explains it and how to reach them if no reply arrives.

Request a copy for your records. Ask how the result affects the next visit and whether the test has a separate charge.