How Long Does It Take to Get Drug Test Results from Quest Diagnostics?

If you have recently undergone a drug test, particularly with a reputable company like Quest Diagnostics, it is understandable that you are eager to receive the results and move forward. Drug testing plays a crucial role in many employment processes, ensuring workplace safety and compliance with company policies. This article will delve into the typical timeline for receiving drug test results from Quest Diagnostics, providing insights into what to expect during this essential phase.

The Drug Testing Process

Before delving into the time it takes to receive drug test results, it’s essential to understand the basic steps involved in the drug testing process. Typically, this process consists of the following stages:

1. Collection of Samples

The initial phase of the drug testing process involves the collection of samples, which can include urine, blood, hair, or saliva, depending on the specific requirements of the test. Quest Diagnostics, being a reputable provider, follows rigorous collection procedures to uphold the integrity and accuracy of the samples.

2. Transportation to Lab

After the collection of samples, they undergo careful transportation to a Quest Diagnostics laboratory for analysis. This transportation process is meticulously designed to maintain the chain of custody, thereby ensuring the reliability of the results.

3. Analysis and Testing

At the laboratory, skilled professionals conduct a comprehensive analysis and testing of the collected samples. This stage is crucial for accurately detecting the presence of drugs or their metabolites. Quest Diagnostics utilizes advanced equipment and adheres to stringent quality control measures to ensure the reliability of the results.

4. Reporting Results

Following the completion of the analysis, the results are generated. The time required for result generation can vary depending on several factors, such as the type of test, the substances being tested for, and the volume of samples being processed.

How Long Does It Typically Take?

The time it takes to receive drug test results from Quest Diagnostics can vary. Typically, results are expected within 1 to 3 business days after the samples reach the laboratory. While this is a general guideline, slight delays may occur due to specific circumstances. It’s advisable to inquire about the estimated timeframe when undergoing the test to have a reasonable expectation.

Factors That May Affect the Turnaround Time

Several factors can impact the time it takes to get your drug test results:

1. Type of Test

The processing times for drug tests can vary depending on the type of test conducted. Generally, urine tests tend to have quicker processing times compared to hair tests, for instance.

2. Testing Requirements

The processing time for drug tests may be influenced by the specific substances being tested. Tests that target a broader range of drugs may take longer to process than those focusing on specific substances.

3. Volume of Samples

Due to the substantial client base served by Quest Diagnostics, the laboratory’s processing time for drug test results may be extended if there is a high volume of samples being analyzed.


The anticipation of drug test results can be an anxious period, particularly when significant decisions hinge on the outcome. Having insight into the process and the usual timeframes can alleviate some of this stress. Quest Diagnostics, renowned for its dedication to accuracy and quality, endeavors to deliver results within a reasonable timeframe. It’s advisable to consult with the testing facility to gain clarity on the anticipated result time, enabling better management of expectations.