1. Quest Diagnostics:

- The company offers hair drug tests as part of its services.

- It provides testing for several substances including amphetamines (amphetamine, methamphetamine, MDMA and MDA), cocaine, marijuana, opiates, oxycodones, and PCP.

2. Drug Test Hair:

- A hair test is mentioned specifically in the context of drug detection.

- The text suggests that a hair drug test should be chosen when looking for repetitive or habitual patterns of drug use over an extended period due to its ability to detect drugs up to 90 days after consumption.

3. Detection Window:

- The term 'detected' is used multiple times in relation to the time frame within which substances can still be detected through a hair test.

- According to the text, hair testing provides detection for up to 90 days due to its ability to detect repetitive patterns of drug use over this period.

4. Pre-Employment and Random Testing:

- The text suggests that hair tests are an excellent option for these types of programs because they act as a powerful deterrent against drug abuse.

- It also mentions that hair testing often yields higher positivity rates compared to urine or oral fluid testing, making it particularly useful in identifying habitual and periodic patterns of drug use.

5. Pattern of Use:

- The text highlights the importance of understanding whether an individual is using drugs habitually (repetitively) versus occasionally when interpreting a positive result from a hair test.

- It suggests that because hair tests detect repetitive or patterned drug use over time, they are not ideal for situations where immediate results after an incident occur.

In summary, the text emphasizes the importance of choosing a hair drug test in specific scenarios such as pre-employment and random testing programs due to its ability to identify patterns of habitual versus occasional drug use. It also highlights that Quest Diagnostics offers comprehensive substance detection through their tests with high sensitivity rates compared to other methods like urine or oral fluid testing.

Quest diagnostics drug test hair