Analysis of clippings from the distal end of digits to detect substance use offers a unique method for assessing long-term drug exposure. This process involves collecting a small sample and subjecting it to laboratory testing to identify the presence of various substances or their metabolites. For example, this type of analysis can reveal chronic use patterns not always detectable through other testing methodologies.
The value of this testing lies in its ability to provide a retrospective window of several months, reflecting drug incorporation into the keratin structure during nail growth. This extended detection window is advantageous in situations where evaluating prolonged or repeated substance use is critical. Furthermore, the ease of collection and non-invasive nature of the procedure contribute to its appeal in various settings.