An online estimation tool exists to provide individuals with a projected timeframe for marijuana detection in their system, often related to employment screenings. These tools utilize self-reported data, such as frequency of use, body mass index, and type of cannabis consumed, to produce an estimated window of detection. For example, a person who consumes cannabis daily will likely have a longer detection window than someone who uses it occasionally.
The value of such an estimator lies in offering a general understanding of potential detection periods. This can be beneficial for individuals preparing for pre-employment screenings or other situations where testing may occur. Historically, the need for this type of estimation arose from the increasing legalization and social acceptance of cannabis, coupled with existing workplace drug policies. The accuracy of the estimation, however, is limited due to individual metabolic differences and variability in testing methodologies.