Screening Visits

What screening typically involves, how to approach consent review, and which questions reduce surprises.

Last updated: February 27, 2026

What screening typically includes

Exact steps vary by protocol. A professional site should explain what will occur and why.

Common components

  • Informed consent discussion and document review
  • Medical history and medication/supplement review
  • Vitals and baseline measurements
  • Laboratory tests (blood/urine), and pregnancy testing when applicable
  • ECG/EKG or other baseline assessments (protocol-dependent)
  • Questionnaires, diaries, or baseline evaluations

Planning tip: Ask whether fasting is required and the expected visit duration.

Consent: what to verify

  • Visit schedule and total time commitment
  • Most burdensome procedure(s) and frequency
  • Known risks and common side effects
  • Withdrawal process and follow-up expectations
  • Compensation structure and payment timing
  • Who to contact for questions or concerns (including oversight contact when provided)

Questions to ask at screening

These questions focus on feasibility and reduce surprises later.

TopicQuestions
TimeHow long will today’s visit take? How many total visits are required?
ProceduresWhat is the most intensive procedure? How many times does it occur?
RestrictionsAre there medication, diet, fasting, or activity restrictions?
Follow-upWhat follow-up calls/visits are required? Are there strict timing windows?
PaymentsHow is compensation paid? Is compensation prorated if I withdraw?
ResultsWill abnormal screening results be communicated? What happens if eligibility changes?

Practical preparation checklist

A short list that reduces delays and improves clarity.

Bring

  • Government-issued ID
  • Medication and supplement list (include doses if possible)
  • Notebook (or notes app) for instructions and names

Confirm in advance

  • Fasting requirements or diet restrictions
  • Parking/location logistics and arrival time
  • Expected duration of screening
  • Whether you may drive afterward (if sedation or procedures occur)