When you lose patients,
you lose key data

Bioclinica's L2FU™ rapidly reconnects sites with lost patients, helping bring potentially life-changing treatments to patients faster.

Learn more

Lost To Follow-Up Whitepaper

Download white paper Finding Patients Lost to Follow-up: Efficient Use of Resources to Ensure High-Quality Data

  • Why is retaining patients increasingly difficult?
  • How are standards changing for missing patient data?
  • How can you address the possible causes of drop-outs?
  • How can a patient tracking service help ensure more complete and robust data?
Download White Paper

Download the L2FU™ White Paper

Even when data is lost, it can still be found using a reliable patient tracking service – here’s how.

Lost To Follow-Up Whitepaper

In our white paper, we look at a key reason why many studies fail – loss of patient data - and what you can do to ensure robust and complete data for your study. We outline current standards for handling missing data and strategies you can take to minimize loss of data and its impact on timelines and budget.

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Your success depends upon the timely submission of complete and accurate data.

Trial Delays Are Expensive
6% of clinical trials
are completed
on time
27% of patients drop out
after 48 months
of follow-up
81% of studies reported patients lost
to follow-up

Losing PATIENTS = losing critical DATA

Your compromised data may result in the “tombstone” press release — “While the data from the trial showed ‘positive trends,’ the results were not statistically significant, and the endpoints were not met.”

Bioclinica L2FU™ Average Results
10 days global avg time
to locate subjects
(48hr US avg)*
90%+ success rate
in all countries
55+ countries in which we’ve successfully located patients

Bioclinica L2FU™ Reduces the number of patients lost

For over 25+ years the Bioclinica L2FU™ service has rapidly reconnected sites with lost patients, helping bring potentially life-saving and life-changing treatments to patients faster.

Bioclinica L2FU™ stores data real-time in a secure, proprietary portal

L2FU Portal

Secure access and exchange of information ensures data privacy.

  • Secure transfer of personally identifiable information (PII) between the L2FU team and site only, with full audit trail*
  • Conditional access
  • Real-time review of blinded data via reports
  • Data entry by sites of last known information for patients lost to follow-up
  • Retrieval of updated PII and vital status

The portal is a fully validated 21 CFR Part 11 compliant tool utilized to facilitate encrypted patient data exchange between the Bioclinica L2FU™ team, study sites and sponsors in a secure online environment.

Request a demo

*Sponsor only has access to blinded patient data.

We are


We operate in more than 60 countries worldwide.


We specialize in finding missing patients and data for clinical trials.


Our methods have achieved a 90% success rate.


We can customize our approach to meet your study’s needs.


Our online portal facilitates encrypted exchange of information.


Average time to locate patients in N. America is 48hrs — 10 days globally


25+ years of experience recruiting, retaining and re-entering patients.


We have found more than 2,100 patients globally.

Questions? How can we help?

Learn more or talk to our team about your challenge.

Let's get started
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