0️⃣ Understanding Day-Zero(0) in Pharmacovigilance

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This extra knowledge in pharmacovigilance blog covers:

  1. What “Day-Zero” means in pharmacovigilance.
  2. Recording and recognizing Day-Zero across different report types.
  3. The significance of Day-Zero in regulatory timelines for submissions.
  4. An uncomplicated tool for calculating days.

Table of Contents:

  1. Definition of “Day Zer(0) in Pharmacovigilance
  2. Capturing Day Zero in Records
  3. Recording Day Zero: Communication mode
  4. Figuring Out the Day for Submission
  5. Sophisticated Tool For Calculating the day from “Day Zero”
  6. Reports Fit and Unfit for Day Zero
  7. Conclusion
  8. FAQ

A “Day Zero” in pharmacovigilance

Day-Zero” is the point when an organization identifies a report containing the basic criteria necessary for processing and meeting the requirements for Individual Case Safety Report (ICSR) submission.

In other words,“It is the date on which an organization becomes aware of a publication or the report containing the minimum information for an ICSR to qualify for submission.”

Capturing Day Zero in Records

According to guidelines, “Day-Zero” is the moment when anyone within the organization or a third-party contractor becomes aware of a report or publication that meets the minimum criteria for an Individual Case Safety Report (ICSR) submission. Applicable to both follow-up (FU) and initial reports.

“In the realm of drug regulatory affairs, submission of accurate reports serves as a beacon of accountability and transparency, ensuring the safety and efficacy of pharmaceutical products for the well-being of all.”

Recording Day Zero: Communication mode

The regulatory submission of each case is based on regulatory requirements and country-specific regulations. The day of submission for each case is calculated based on the initial receipt date, which is considered Day-Zero.

Initial reports are recorded when they are received by the company.

For example, it depends on the source (mode) of the report:

  1. Through email communications: Received instantly, but recorded after reviewing the report.
  2. Through mailing letter: May take time to reach.
  3. Through social media communications: Received instantly, but recorded after reviewing the report.
  4. Through telephonic communications: Immediate communication and immediate recording.
  5. When it comes to calculating Day-Zero for literature cases, it’s important to consider when the safety department actually finds the literature. Sometimes, the literature may have been written some time ago, but the initial report date should be marked as the date it was discovered by the safety department.
  6. For follow-up (FU) cases, even if the FU is received with an incomplete report, it should still be calculated with Day-Zero once the report meets the necessary criteria.
📢 Recommendations: I highly recommend our two existing blogs that you may not be aware of, which cover the topics of “Receipt Dates” and “The Significance of Receipt Dates.”

Figuring Out the Day for Submission

Firstly, many people confused about calculating the submission days, which can lead to rushing or delaying submissions. So, here is a clear clarification:

For instance, If a report is recorded on January 1st and the submission deadline is day 15, that means the 15th day would be January 16th.

When the day starts at zero, it should forward to the safety department within 24 hours of initial receipt. If the initial receipt day considered zero, then the first day (day 1) starts from the next day of “day-zero“. This calculation should be done in this manner.

The days calculated strictly as calendar days.

Calendar days: Calendar days refer to the total number of days on a calendar, including weekends and holidays. It’s different from working days (Business days).

Business days: Business days, also known as working days, typically refer to the days of the week when most businesses are open and operational. These typically exclude weekends and public holidays.

To help you avoid confusion in your calculations, we invite you to utilize our tool for better understanding of days.

Drug Regulatory Submission Timeline Calculator
Drug Regulatory Submission Timeline Calculator




Reports Fit and Unfit for Day Zero

  1. Fit when reports processed for ICSR case management
  2. Fit when reports needing to meet four minimum criteria
  3. Day Zero not calculated for invalid cases
  4. Fit when Invalid cases becoming valid in follow-up reports

Conclusion

This blog may cover some crucial points that discussed regarding the specific matter of Day Zero.

You may now have some ideas on how to record Day Zero and how to calculate the day of submissions. Hopefully, it is informative for many who are reading this blog.

If anyone would like to add any missing information discussed above, feel free to add it in the comments.

FAQ:

What is the meaning of day zero in pharmacovigilance?

Day zero is the day when a report is received, and personnel may become aware of its content, ensuring its validity.

What is the difference between day zero and receipt dates?

Receipt dates are recorded in two distinct records: the initial report received, and the report sent to the safety department to proceed with the case. The first receipt date is referred to as the initial receipt date or day zero, while the second is termed the SRD (Safety Receipt Date).

What is the significance of day zero?

Day zero marks the commencement date of an event, validated initially. The submission day calculation is anchored on this day, with variations based on country-specific and case severity criteria.

How to record the day zero for cases?

Day zero is the date when any personnel, MAH, or third-party vendor becomes aware of the case. This date must be recorded, and cases must be pulled and sent to the safety department within 24 hours.

Day zero in literature cases

Calculating day zero remains the same for literature cases, but in certain instances, the literature may have been published some time ago, and the company becomes aware of the event on a different day. In this scenario, the day zero is recorded as the day the company becomes aware of the event.

Disclaimer: We write this blog based on our experience and extensive knowledge, supported by references. Please note that we are not responsible for the content on the referenced websites. If you come across any misinformation or misguidance or spelling mistakes, kindly inform us promptly.



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Meet Bala, the founder of Drugvigil, a service provider specializing in pharmacovigilance. He’s not only an expert in this field, but also a passionate entrepreneur who enjoys creating new opportunities and helping others grow. Despite starting from scratch, he’s determined to develop his company from the ground up. If you’re interested in his work, be sure to show your support and share his message with others.




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Comments

3 responses to “0️⃣ Understanding Day-Zero(0) in Pharmacovigilance”

  1. […] 📢 Recommendations: I recommend checking out two of our existing blogs that are closely related. The first covers what is case receipt in case processing, and the second explores the relationship between Day-Zero and receipt dates. […]

  2. […] 📢 Recommendations: Understanding these terms is crucial for efficient case management. I highly recommend visiting our blog for a detailed analysis of case receipts and a comprehensive explanation of the day-zero concept in pharmacovigilance. […]

  3. […] 📢 Recommendations: I recommend checking our existing blog where we discuss the significance of receipt dates Your text here, Hi this is test file testing block. explained the concept of day-zero in pharmacovigilance. […]

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