Before the test, you may be asked to remove any metal objects or clothing that could interfere with the imaging. You will also be asked to lie still on the CT table while the images are being taken. It is important to inform your healthcare provider if you are pregnant or have any allergies to contrast dye. In some cases, contrast dye may be used during the CT scan to enhance the images, but for a CT spine single without contrast, no contrast is used. Your healthcare provider will provide you with specific instructions on how to prepare for the test, which may include fasting or restrictions on food and drink before the test. The cost of the test can vary depending on various factors, such as the location, healthcare provider, and insurance coverage.