For people who live far from major medical centers, getting a test that is only available at a large hospital can mean a long journey. This is especially true when a tumor marker such as CEA (carcinoembryonic antigen) rises and a PET-CT (positron emission tomography) or CT scan is scheduled. Because these scans are often booked for early morning, patients frequently need to stay overnight near the hospital the day before. Navigating an unfamiliar city while also preparing for a test can feel overwhelming, so it helps to plan two things separately in advance: getting there, and getting ready for the scan.
When choosing lodging, the first thing to look at is how easily you can reach the hospital. A place within walking distance, one or two stops away by subway or bus, or close to a hospital shuttle stop lets you avoid rushing in the morning. If your appointment is very early, check both the taxi travel time and when the first public transit of the day runs. Areas around large hospitals often have accommodations used regularly by patients and caregivers, and the hospital information desk, social work team, or online patient communities can point you toward nearby options. Since you may not feel your best, choosing a place that is quiet, clean, has an elevator, and can store your luggage will ease the physical burden.
When packing, gather your ID, appointment and referral paperwork, a list of your current medications along with spare doses, any prior imaging (such as CDs), and insurance documents first. Bringing loose, comfortable clothing without metal fasteners can save trouble on the day of the scan. If the hospital is new to you, use a map app the night before to locate the main entrance, the scan department, and the check-in route, and plan to arrive with time to spare.
Preparation for a PET-CT varies from one facility to another, so the rule is to follow the exact instructions you are given. Still, some points are commonly advised. Fasting for several hours before the scan is usually required, and sugary drinks, candy, or gum are avoided because they can affect the results. Water is generally allowed, so drink as instructed to stay hydrated. If you have diabetes, discuss blood sugar and any adjustment of your medication or insulin with your care team ahead of time. Vigorous exercise the day before is best avoided because it can draw the tracer into muscles and interfere with the reading, and staying warm during travel helps, since being cold can also affect the images.
Hearing that a marker has risen often makes the wait for results heavy and can disturb sleep. A tumor marker level can move up or down for many reasons, so it is not a conclusion by itself; imaging is simply a step toward seeing the situation more clearly. If managing all of this alone in an unfamiliar city feels like too much, arrange for a companion and settle into a comfortable place to rest, so you can protect your condition for the day of the scan.
This article is for general information only and does not replace individual medical care. For specifics such as fasting time, blood sugar control, and pre-scan precautions, always follow the guidance of the facility performing the test and your own care team, and contact the hospital where you are booked with any questions.