What is the importance of checking the urine temperature strip on the drug test?

Under normal situations fresh urine will display a temperature between 90 and 100 degrees Fahrenheit on the temperature strip, if read within 4 minutes of the collection. If the temperature strip does not register, the specimen should be immediately re-checked.  To do this, collect a new specimen using a new cup (or strip). Specimens with a temperature out of range may indicate a substituted or adulterated sample.