MDL stands for?

MDL stands for?

• A. Method Detection Limit
• B. Maximum Detection Limit
• C. Minimum Detection Level
• D. Measurement Data Limit

Answer: (A)

MDL stands for Method Detection Limit—the smallest concentration of an analyte that a method can reliably detect under specified conditions, with a defined level of confidence (typically 99%), taking into account the method’s variability. It’s determined by measuring several low-level samples, calculating the variability of those measurements, and using the calibration slope to translate that variability into a concentration. This makes the MDL a method-level threshold, not just an instrument limit, and labs use it to decide whether a result is detectable and reportable.

MDL stands for Method Detection Limit—the smallest concentration of an analyte that a method can reliably detect under specified conditions, with a defined level of confidence (typically 99%), taking into account the method’s variability. It’s determined by measuring several low-level samples, calculating the variability of those measurements, and using the calibration slope to translate that variability into a concentration. This makes the MDL a method-level threshold, not just an instrument limit, and labs use it to decide whether a result is detectable and reportable.