Ace your Screening

Get ready for your clinical trial screening at Biotrial. Follow key tips to improve your eligibility, from BMI checks to fasting requirements.
Paid clinical trial participant talking to their clinical trial advisor during the screening.
Paid clinical trial participant talking to their clinical trial advisor during the screening.

Preparing for a Screening Visit to Join a Clinical Trial?

Follow these essential tips to pass your screening and become eligible to join a paid clinical trial.

Do not schedule a screening visit if you have smoked or consumed products containing THC within 3 to 4 weeks before the appointment.

This could result in failing the drug test, and you will not be compensated for your time or travel.

To ensure you are ready for the screening, consider purchasing a urine drug test at your pharmacy to test yourself in advance.

THC molecule structure drawing with marijuana plant in the background.

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Avoid intense workouts for at least 24 to 48 hours before your screening.

Instead, stick to light activities like walking or stretching to maintain your baseline health. Strenuous exercise can temporarily impact key biomarkers such as enzyme levels, white blood cell counts, and hydration status, which may affect your screening results. These fluctuations could lead to misinterpretations or even disqualification from the study. To ensure accurate results,

Paid clinical trial participants exercising.

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📏⚖️Be prepared with your exact weight and height when scheduling your screening visit.

You will not qualify to participate if your Body Mass Index (BMI) falls outside the study’s specified range.

You can weigh yourself at a pharmacy and use our BMI calculator below to check your eligibility.

BMI calculation written on the paper with a marker and a measuring tape next to it.

Why Are Your Weight And BMI Important For Clinical Trials?

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📝💊  Share complete and accurate information about your medical history and any medications, vitamins, or supplements you currently take.

Some substances may interfere with study requirements or test results, and misrepresentation could lead to disqualification or pose health risks during the study.

⏰Plan to arrive early for your screening visit.

Arriving late could reduce your chances of being included in the study and waste time.

Fasting is essential for accurate blood test results: ensure you have fasted for at least 8 hours before your appointment.

🆔Bring a valid State ID and SS Card at each new screening visit.

Bring the original or a copy of your Social Security card (or any IRS document showing your ITIN) unless you provided it during a previous screening visit.