“Partially produced with genetic engineering” means that some, but not all, of the ingredients in a food product come from genetically modified crops. You’ll find this phrase on packaged foods where at least one ingredient was made from a GMO source, while the rest of the ingredients were not. It’s one of several text options manufacturers can use to comply with the National Bioengineered Food Disclosure Standard, the federal labeling law that took effect in the United States.
What the Label Actually Tells You
The distinction comes down to how much of the product involves genetic engineering. A food labeled simply “bioengineered” contains ingredients that are predominantly or entirely from GMO crops. A food labeled “partially produced with genetic engineering” (or its equivalent, “partially produced with bioengineering”) signals a mix: some ingredients are genetically engineered, others are not.
In practical terms, think of a granola bar. The oats might be conventional, but the corn syrup and soy lecithin could come from genetically engineered corn and soybeans. Because only some ingredients are GMO-derived, the product gets the “partially” label rather than the full “bioengineered” designation. This gives consumers a rough sense of how much genetic engineering is involved, even though the label doesn’t specify which ingredients or what percentage.
Which Ingredients Trigger the Label
Only a handful of GMO crops are grown in the United States, but they show up in a huge number of processed foods. Soybeans, corn, sugar beets, canola, and cotton are the major ones. These crops get turned into common ingredients like corn syrup, cornstarch, corn oil, soybean oil, canola oil, granulated sugar, soy lecithin, and soy-based emulsifiers. If your cereal contains sugar from GMO sugar beets but the wheat and oat ingredients are conventional, that product would qualify as partially produced with genetic engineering.
Most GMO soy goes to animal feed and soybean oil production, but it also ends up as lecithin, emulsifiers, and proteins in thousands of processed foods. Because these ingredients are so widespread, the “partially produced” label appears on a broad range of products, from snack foods to sauces to frozen meals.
The 5 Percent Threshold
The USDA built in a threshold for trace contamination. If no ingredient in a food intentionally contains a bioengineered substance, and any GMO presence stays below 5 percent per ingredient, the product is exempt from disclosure entirely. This allowance exists because complete separation of GMO and non-GMO crops during growing, harvesting, and processing is nearly impossible. Small amounts of cross-contamination can happen at every stage.
For that exemption to apply, though, the manufacturer must have sourced the ingredient from a non-GMO crop and taken reasonable steps to keep bioengineered and non-bioengineered ingredients separate. Simply having a low percentage isn’t enough on its own. A record showing 0.9 percent GMO presence, without evidence that the ingredient was sourced as non-GMO and kept separate, does not satisfy the exemption. The intent behind including the ingredient matters, not just the amount.
What Doesn’t Require a Label
Several categories of food are completely exempt from bioengineered disclosure, regardless of their ingredients. Food served in restaurants and similar establishments doesn’t need a label. Neither does food from very small manufacturers. Products certified under the National Organic Program are also exempt, since organic standards already prohibit genetic engineering.
One exemption surprises many people: meat, eggs, and dairy from animals that ate GMO feed do not need a bioengineered label. A chicken raised on genetically engineered corn and soy produces eggs that are not considered bioengineered under this law. The rule focuses on the food itself, not what the animal consumed.
Highly refined products get special treatment too. If a food has gone through a validated refining process that removes all detectable modified genetic material, the manufacturer can skip the disclosure as long as they keep records proving the process works. This is why some oils derived from GMO crops may not carry a bioengineered label, even though the crop they came from was genetically engineered.
How to Spot It on Packaging
Manufacturers have several ways to disclose bioengineered content. They can use plain text on the package (like “partially produced with genetic engineering”), a USDA-designed symbol, a QR code or digital link, or a text message number. Some companies use a combination of these. The USDA symbol is a green circle with the sun and a field of crops inside it, sometimes accompanied by the words “bioengineered” or “derived from bioengineering.”
The text phrasing varies slightly between products. You might see “partially produced with bioengineering,” “partially produced with genetic engineering,” or “contains a bioengineered food ingredient.” These all communicate the same basic fact: not every ingredient is GMO-derived, but at least one is.
When This Became Mandatory
The National Bioengineered Food Disclosure Standard was published in December 2018 and became effective in February 2019. Large food manufacturers had until January 1, 2020, to start implementing it, while small manufacturers got an extra year, until January 1, 2021. Voluntary compliance ran through December 31, 2021, and mandatory compliance kicked in on January 1, 2022. As of June 23, 2025, the USDA began enforcing full mandatory compliance for all regulated entities.
Before this federal standard, GMO labeling was a patchwork of state laws. Vermont had passed its own mandatory labeling requirement, and several other states were considering similar legislation. The federal law created a single national standard, replacing that state-by-state approach. The shift also moved the official terminology from “genetically modified” or “GMO” to “bioengineered,” though the older phrases like “produced with genetic engineering” remain acceptable on labels.