Low-carb pasta is marketed with big front-of-box numbers, and those numbers are not all regulated the same way. This checklist uses the official label guide, credited below, and applies it to a real example.
1. Read the Nutrition Facts panel, not the front of the box
The FDA guide to the Nutrition Facts label explains that the panel holds the product-specific information: serving size, calories and nutrients. Front-of-box slogans are written by the brand, so find the panel and compare it with any number on the website.
2. Treat “net carbs” as the brand's arithmetic
The FDA guide we read lists Total Carbohydrate and Dietary Fiber on the label and does not use the term net carbs. When a brand says 0 g net carbs, work out how it got there from total carbohydrate and fiber, and ask whether a lab test supports it. If you manage a medical condition such as diabetes, ask a clinician how to count carbohydrates.
3. Check the serving size
The same guide says serving sizes are standardized so similar foods can be compared, and that the serving size is not a recommendation of how much to eat. Dry pasta servings are small, so compare per-serving figures like for like, and note whether numbers are for dry or cooked pasta.
4. Compare price per serving
Low-carb pasta usually costs more than standard pasta, and subscription discounts can change the price after the first order. Divide the total by the number of servings and compare, remembering that a lower carb count is not the same as better value.
5. Check allergens and the return terms
Many low-carb pastas are made from wheat and contain gluten, while some products in the same range may be gluten-free, so check each product page. Look for whether opened food can be returned, the window, who pays return postage and how fast you must report damage.
An example: checking a brand against the list
In our Pete's Pasta review we applied these questions. The brand states per-serving figures for its spaghetti and accepts returns of opened food within 30 days, but net carbs is its own calculation, the wheat pastas contain gluten and the ingredient information on two pages did not match.
A note on the sources
The FDA is the regulator that publishes the label guide. We wrote this article in our own words. Some links to brands on this site are affiliate links; see our affiliate disclosure.