NAIL TEST
What is a nail test?
Like any other test used to detect drug and alcohol, we can also do it using finger nails.
How far back does a nail test detect?
A drug result using fingernails can go back up to 6 months. Usually 3 to 6 months.
How is the collection performed?
The donor must have all 10 fingernails at least a quarter height of 1.75mm on each to be valid.