Storage requirements for an investigational product (IP) are documented across several core clinical trial documents, not in a single location. The primary sources are the Investigator’s Brochure, the study protocol, the product labeling, and the pharmacy manual. Each serves a different purpose, and knowing where to look depends on what you need: general stability data, site-level handling instructions, or regulatory compliance records.
The Investigator’s Brochure
The Investigator’s Brochure (IB) is typically the first place to look for detailed storage specifications. It contains the manufacturer’s stability data, recommended temperature ranges, light sensitivity information, and shelf life. The IB is compiled by the sponsor and updated as new data becomes available, so it reflects the most current understanding of how the product behaves under various conditions. If you need to know why a product requires a specific temperature range or what happens if conditions deviate, the IB is your primary reference.
The Study Protocol
The protocol itself often includes a section on investigational product management that specifies storage conditions relevant to the trial. This may repeat key information from the IB but places it in the operational context of the study. Protocol amendments can also update storage requirements if stability data changes during the trial. Both the protocol and the IB are listed as essential documents in regulatory templates, such as the NIDCR’s Essential Documents Storage Location Table, and should be maintained in the site’s regulatory binder.
Product Labeling and Container Instructions
Federal labeling regulations require that storage conditions appear directly on the investigational product packaging. Under 21 CFR Part 201, prescription drug labeling must include “special handling and storage conditions” in the How Supplied section. Expiration dates must appear on both the immediate container and the outer package. For investigational products specifically, labels on shipping containers should include clear instructions for anyone receiving, handling, and storing the product, as well as directions for returning unused supplies.
The label on the container is the most accessible reference point for day-to-day handling. It tells site staff or, in decentralized trials, participants exactly what temperature range to maintain and any precautions like protecting the product from light or moisture.
The Pharmacy Manual
Many trials include a pharmacy manual (sometimes called a pharmacy binder or dispensing guide) that translates the IB’s storage data into practical site-level procedures. This document typically covers where the product should be stored at the site, who has access, how to set up and calibrate temperature monitoring equipment, and what to do if storage conditions fall outside the acceptable range. If your site has a dedicated research pharmacist, this manual is their primary working document for IP management.
Accountability Logs and Stock Records
Investigational Product Accountability Logs track every unit of study drug from receipt to final disposition. The NCCIH’s Stock Record template, for example, captures the product name, manufacturer, dose form and strength, dispensing area, and a running transaction log that includes dates, quantities dispensed or received, lot numbers, and the recorder’s initials. These logs don’t set the storage requirements, but they document the chain of custody and provide evidence that the product was managed properly at your site.
Federal regulations under 21 CFR 312.62 require investigators to maintain adequate records of drug disposition, including dates, quantity, and use by subjects. These records must be retained for two years after the drug receives marketing approval for the studied indication, or two years after the investigation is discontinued if no application is filed.
Temperature Excursion Documentation
When storage conditions deviate from the specified range, sites are required to document the event and report it. NIAID’s Temperature Excursion Form (Form L) captures the required storage temperature, the actual temperature the product was exposed to, the duration of the excursion, and any comments about the circumstances. The sponsor or manufacturer then evaluates whether the product remains usable based on stability data. Your site’s pharmacy manual or standard operating procedures should outline the exact steps: who to notify, what forms to complete, and whether to quarantine the affected product while awaiting a decision.
Controlled Substance Requirements
If the investigational product is a controlled substance, additional physical security requirements apply. FDA regulations specify that the investigator must store the drug in a “securely locked, substantially constructed cabinet, or other securely locked, substantially constructed enclosure, access to which is limited.” This is separate from temperature and stability requirements. It is a security measure to prevent theft or diversion. The protocol or pharmacy manual should specify how these security requirements integrate with the trial’s other storage procedures.
Storage in Decentralized Trials
When investigational products are shipped directly to a participant’s home, storage requirements become more complex. FDA guidance on decentralized clinical trials notes that drugs best suited for direct-to-participant shipment are those with “good stability profiles,” while products requiring specialized handling, shipping, or storage conditions may not be appropriate for home storage.
Sponsors are expected to address in trial documents how the physical integrity and stability of the product will be maintained during shipment, including appropriate packaging materials and temperature control methods. Participants must receive clear instructions for storing the product at home and returning unused supplies. Some trials use Interactive Response Technology (IRT) systems with specialized modules that monitor temperature-sensitive shipments in real time and flag excursions across all sites and depots, including home delivery locations.
Where to Start Looking
In practice, the fastest path to finding storage requirements depends on your role. If you are setting up a new site, start with the protocol and the IB, which together give you the scientific basis and operational framework. If you are handling product day to day, check the pharmacy manual and the container label. If you are preparing for a monitoring visit or audit, make sure your accountability logs and any temperature excursion forms are complete and match the requirements laid out in the protocol. All of these documents should be organized in your site’s regulatory binder or trial master file, with locations tracked using an essential documents table so nothing is missing when an auditor asks.