The standard hair follicle test turnaround time is 1 to 3 business days from the time the lab receives the sample. Some cases may take longer, up to 5 business days, especially if additional confirmation is needed.
Labs begin processing almost immediately upon receiving a viable hair sample. Once initial screening is done, confirmatory testing may follow if any substances are detected. Additionally, certain foods to avoid can sometimes affect the results, so it’s essential to be mindful of your diet during the testing period. These timelines can vary slightly between labs and based on testing requirements.
Why Turnaround Time Matters
But with more companies adopting hair testing, timing becomes crucial. Whether it’s for a pre-employment requirement, legal case, or compliance matter, knowing the hair follicle drug test turnaround time helps set realistic expectations.
This guide explains how long hair tests take, what affects lab processing, and how to get results quickly and reliably.
What is a Hair Follicle Drug Test?
Before diving into turnaround times, it helps to understand what the test involves.
A hair follicle drug test analyzes a hair sample—typically 1.5 inches of hair cut close to the scalp—to detect drug metabolites trapped inside the hair shaft. These metabolites remain in hair for much longer than in urine or saliva, offering a 90-day detection window.
Substances commonly screened for include:
- Amphetamines
- Cocaine
- Opiates
- Marijuana (THC)
- PCP
- Benzodiazepines
- Barbiturates
- Synthetic opioids
The test is non-invasive, tamper-resistant, and widely used in workplace and legal settings.
What Affects The Hair Follicle Test Turnaround Time?
Turnaround time doesn’t start when the hair is collected—it starts when it reaches the lab. While many labs promise 24-48 hour results, a variety of factors can impact the actual delivery time.
Here’s a breakdown of the most common ones:
Sample Transportation and Chain of Custody
Once collected, samples must be packaged and shipped to a certified laboratory. The speed and security of this transfer affects how quickly analysis begins. Delays in transit or improper handling can stall the process.
Lab Workload and Prioritization
If the lab is processing high volumes—especially during peak hiring seasons or after major contract wins—results may take longer. Rush processing is sometimes available, but it may incur extra fees.
Initial Screening vs. Confirmatory Testing
Most hair follicle drug tests follow a two-step process:
- Immunoassay screening: Fast and inexpensive, but may return false positives.
- GC-MS or LC-MS confirmation: Highly accurate, used to confirm any positive findings.
If the immunoassay shows potential drug presence, additional time is required for confirmation using gas or liquid chromatography.
Hair Sample Condition
The quality and length of the hair can also impact test completion. Very short or chemically treated hair may be insufficient or require more processing. In such cases, the lab may request a second sample, further delaying results.
Is Same-Day or Next-Day Testing Possible?
Yes—but only under specific conditions. Some specialized labs offer expedited services that provide results within 24 hours of receiving the sample. However, the availability of same-day results depends on several factors, including the proximity to the testing facility, whether in-house labs are used instead of third-party services, and the type of test ordered—such as a basic 5-panel test versus a more comprehensive 17-panel test. Most standard clinics or urgent care centers do not offer same-day results due to the time required for shipping and lab processing.
Step-by-Step: Hair Follicle Drug Testing Timeline
Here’s what you can expect from start to finish.
1. Day 0: Sample Collection
- Hair is collected at a clinic or urgent care facility.
- Requires at least 1.5 inches of hair, usually from the crown.
- Takes 5–10 minutes.
2. Day 1: Shipment to Lab
- The sample is packaged with chain-of-custody documentation.
- Sent to a SAMHSA-certified or private lab.
3. Day 2–3: Initial Screening and Confirmation
- Immunoassay testing performed.
- If positive, GC-MS confirmation starts.
4. Day 3–5: Results Finalized
- Negative results reported in 1–3 days.
- Positive or inconclusive results may take up to 5 business days.
Who Typically Requests Hair Follicle Drug Testing?
Hair follicle drug tests are most commonly requested by:
- Employers conducting pre-employment or random drug screenings
- Courts handling probation, child custody, or family law matters
- Rehab facilities for long-term drug monitoring
- DOT-regulated employers seeking compliance with safety standards
Because of its long detection window and tamper-resistance, it’s considered one of the most reliable forms of testing for chronic or habitual substance use.
Is the Hair Follicle Test More Accurate Than Urine or Saliva?
Hair testing offers several advantages, such as its ability to detect long-term drug usage, with a detection window of up to 90 days, compared to the much shorter 1-3 days for saliva or urine tests. Additionally, it is less susceptible to adulteration or substitution, ensuring greater accuracy. Another benefit is that it doesn’t require a restroom, making the process quicker and more private. However, one limitation is that it won’t detect very recent drug use, specifically within the last 7 days, because of the time required for drug metabolites to be embedded in the hair.
For those interested in urine testing, especially for monitoring kidney function, you might find How to Read Microalbumin Urine Results to Understand Your Kidney Health helpful, as it explains how to interpret key markers for your wellbeing.
How You Can Speed Up the Hair Drug Test Turnaround Time
Here are a few practical ways to reduce delays:
What If The Results Are Delayed?
It’s not unusual for results to take up to 5 days, especially if confirmation testing is required. If you haven’t heard back after 5 business days, it’s a good idea to contact the clinic or urgent care facility where the sample was taken. Ask if the lab has received your sample and request a timeline for the results. You may also want to check if a retest is necessary due to insufficient or contaminated hair. Keep in mind that delays don’t necessarily indicate a positive result; more often, they are due to sample volume or confirmation testing protocols.
Need Fast, Reliable Hair Testing?
If you’re looking for accurate hair drug testing with a quick turnaround time, Centers Urgent Care has you covered. We provide fast, high-quality urgent care services for children and adults, including comprehensive drug screening options.
Whether it’s for employment, legal compliance, or personal peace of mind, our team ensures your results are processed quickly and securely. Conveniently located for those seeking urgent care in NYC, our clinic partners with certified labs to offer you prompt and reliable test results.
Contact us today to schedule your appointment and get the clarity you need—fast.