Who can participate?
Adults 18 to 25 years old who have been diagnosed with Crohn’s Disease and are taking either Infliximab (Remicade) or Adalimumab (Humira) may be eligible to participate.
What will happen in the study?
This study involves 3 study visits in a week. Here are some of the things that will happen in this study:
You will come in at 8 am for a full-day visit (8 hours), after fasting from the night before.
- Have an IV placed in your arm to collect blood
- Receive vitamin D in capsule form
- Be able to eat a provided breakfast 30 minutes after taking the vitamin D
- Have two additional blood draws during this visit from the same IV. You may opt to not have an IV in place.
You will come in for a blood draw 24 hours after completing the first visit, and then 7 days later. These two additional visits will be brief. The only restrictions are to not take any vitamin D supplements or use a tanning bed during this 7-day period.
You will be given a consent form that thoroughly explains all of the details of the study. A member of the study staff will review the consent form with you and will be sure that all of your questions are answered.