Covance Is Now Labcorp Clinical Trials

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Things to Remember and What to Bring

What to Expect: Clinical Trial Visit Checklist

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Each study has its own requirements. Here are some general tips to prepare for your screening visit.

The Leeds Recruitment team will have talked through anything you need to know beforehand and will send you all the documentation you need.

But in case you need a quick refresher, or just want to know more about what happens when visiting the clinic, here is a checklist of dos and don’ts.


  • Avoid alcohol, poppy seeds and grapefruit for 48 hours beforehand* as these can effect the test results.

  • Avoid any strenuous exercise like weight lifting or running a week beforehand* as this can affect the test results.

  • Avoid food and drink only water (usually about 6 hours*) prior your appointment. This means you will need to avoid caffeinated drinks such as coffee, tea, coke and energy drinks for 6 hours before your appointment.

  • Photographic proof of identity, either your current passport or driving license (UK Citizens only) . If you do not have a passport or driving license you will need to get your GP to complete a form (UK Citizens only) to confirm your identification. Please call the recruitment team or drop by the clinic to pick up one.

  • Your National Insurance Number (NI number) if you have not provided this to the recruitment team already.