Environmental Impact of Disposable Test Strips

Environmental Impact of Disposable [Test Strips](/sell-diabetic-supplies/)

Each test strip is tiny, but the number of people using them is not. The International Diabetes Federation estimated that 537 million adults aged 20 to 79 were living with diabetes in 2021, in the 10th edition of its Diabetes Atlas [1] [4]. We couldn't find a reliable count of strips thrown away worldwide each day. Household studies give a clearer picture. When 80 insulin-treated patients in Germany kept every piece of diabetes waste for three months, 5,362 of the 23,707 items were test strips [3]. Needles were the largest group, at 14,619 items, and the authors note that counting items doesn't by itself show environmental impact [3]. In a 2025 US study of 49 adults, diabetes-related products made up nearly 2% of household waste [5].

Key Challenges

• Material Composition: A strip packs plastic, metal and dried chemistry into a few centimeters. Strips are mass-produced from low-cost materials such as plastics and conductive pastes [11]. Their base layers are plastics such as PET (polyethylene terephthalate) and Polyimide, which aren't biodegradable. Some brands also use precious metals: LifeScan researchers describe the OneTouch Verio strip as having thin-film gold and palladium electrodes facing each other across a thin spacer [6]. Layered products like this are hard to take apart, which is one reason diabetes devices usually end up in household trash still assembled [3]. For more on electrode metals, see Electrode Material Composition (Carbon vs. Gold/Palladium).
• Biohazard Barrier: Used strips carry blood, which keeps them out of ordinary recycling. The German study grouped them with syringes and lancets as sharp waste that can injure people and spread infection when it isn't disposed of properly [3]. Most of the diabetes waste in that study went out with regular household trash, and the participants' biggest complaint was how few recycling options they had [3]. In clinics, used strips go into medical waste, where incineration is common. Strips also carry reagent chemicals. Ferricyanide, the most common mediator in commercial strips, is the chemical that shuttles electrons from the enzyme to the electrode [7]. We found no study measuring whether ferricyanide, strip enzymes such as glucose oxidase, or plastic fragments leach out of discarded strips into soil or water.
• The CGM Trade-off: Switching to a continuous glucose monitor (CGM) changes the kind of waste more than it ends it. In 2024, researchers took apart 24 used sensors from Abbott and Dexcom; most of the weight was packaging and the single-use applicator, not the sensor itself [8]. Every sensor still held a circuit board and a battery, which makes it electronic waste [8]. Strips don't disappear either. In the German study, test strip use didn't differ significantly between treatment groups, even though people with type 1 diabetes used CGMs more [3]. We look at sensor waste in Environmental Impact of Disposable CGM Electronics.

Future Solutions

Researchers are testing paper-based microfluidics and biodegradable substrates such as silk fibroin. Paper is the easier case to explain. It is made mostly of cellulose, which biodegrades [2]. Because paper burns, a sensor contaminated with blood can also be disposed of safely by incineration [2]. Silk fibroin, a protein taken from silk, forms a transparent, flexible film that keeps enzymes working for long periods; a 2024 study used it to build glucose sensors that show results by color change and can be reset with UV light for up to five uses [9]. Both remain laboratory work. Bringing a new material into a medical device means revalidation and extensive paperwork, and a 2025 commentary names those requirements as a common brake on recycled or biodegradable materials in diabetes devices [10]. A compostable strip would still have to meet the same stability and accuracy requirements as today's strips, and as of October 2026 we haven't found one on the market.