Subclinical ketosis is one of the most common and costly metabolic disorders in early-lactation dairy cows, often going undetected without regular testing since affected cows may show no obvious symptoms while still losing milk yield and fertility. These blood ketone test strips measure beta-hydroxybutyrate (BHB) levels directly from whole blood using a compatible Ketone Meter, giving farmers a fast, cow-side way to catch ketosis early during the critical transition period, typically the first 30 days post-calving, when the risk is highest. Shelf life is 24 months.