Managing Test Strip Inventory & Expiration

Proper storage is essential to ensuring test strips remain viable through their full 24-month shelf life. The United States Pharmacopeia (USP) defines controlled room temperature as 20 to 25 degrees Celsius (68 to 77 degrees Fahrenheit), with permissible excursions between 15 and 30 degrees Celsius (59 to 86 degrees Fahrenheit). Transient spikes up to 40 degrees Celsius are tolerated only if they do not exceed 24 hours and the mean kinetic temperature (MKT) remains at or below 25 degrees Celsius. Mean kinetic temperature is a weighted average calculated using the Arrhenius equation that gives greater emphasis to higher temperatures, reflecting the accelerated degradation they cause.

First In, First Out (FIFO) is the standard inventory rotation method for any product with a defined shelf life, and it is non-negotiable for test strip programs. FIFO means that the oldest inventory, measured by expiration date, is always distributed before newer stock. This practice minimizes the risk of strips expiring on shelves and maximizes the usable life of every unit purchased. Implementing FIFO requires discipline at every level of the supply chain.

Running out of test strips means people who need them cannot access a potentially lifesaving tool. Running a perpetual surplus risks expiration and waste. The reorder point formula helps programs find the balance. The standard formula is: Reorder Point equals (Average Daily Usage multiplied by Lead Time in Days) plus Safety Stock. For example, if your program distributes an average of 20 strips per day and your supplier\\

Many test strip distribution programs operate across multiple locations: a central health department office, satellite clinics, syringe services program sites, outreach vans, community partner organizations, and harm reduction vending machines. Multi-site inventory management introduces complexity but is manageable with the right systems and protocols. Cloud-based inventory platforms allow all sites to view and update a single, centralized database in real time, eliminating the information silos that lead to some locations being overstocked while others run short. Key features to look for in a multi-site system include location-level stock visibility, inter-site transfer tracking, site-specific reorder alerts, and consolidated reporting for grant compliance.

The right inventory management tool depends on your program\\

For programs funded by federal grants from CDC, SAMHSA, HRSA, or state health departments, inventory management is inseparable from financial compliance. Grant reporting typically requires documentation of expenditures, including supplies purchased, and progress reports demonstrating how those supplies were used to advance program objectives. CDC requires financial data as documentation of expenditures, outlays, and unobligated balances, and all reporting requirements are specified in your Notice of Award. To maintain grant compliance, your inventory system should be able to generate reports showing total units purchased by lot and date, total units distributed by site and date, current stock on hand by lot and expiration date, units lost to expiration with disposal documentation, and cost per unit distributed.

Every test strip distribution program should have a written inventory management protocol that standardizes practices across all staff and sites. A written protocol should address the following areas. Receiving procedures: who inspects shipments, what is checked, and how receipt is logged. Storage requirements: acceptable temperature range (15 to 30 degrees Celsius), protection from humidity and light, and the physical arrangement of stock by expiration date.

Regular physical audits are the mechanism that keeps your inventory records honest. A physical audit involves counting every unit of test strip inventory at every storage location and comparing the count to what your tracking system says should be there. Discrepancies can indicate theft, misplacement, unrecorded distributions, data entry errors, or unreported damage. For most programs, a monthly cycle count covering a portion of inventory locations, combined with a full physical audit quarterly, provides adequate oversight without consuming excessive staff time.