Drug Screening
Amphetamine Screen & testing Panel Preparation: Fasting, Timing
- Blood draw
- Drug Screening
- Prep checklist included
At a glance
Amphetamine Screen & testing Panel: prep snapshot
- Sample type
- Blood draw
- Fasting
- Fasting is usually not required for this type of screen, but requirements can vary by lab…
- Best collection time
- Collection can generally be done whenever the lab is open, since no strict time-of-day window…
- Typical turnaround
- Varies by collection lab
- Category
- Drug Screening
Below is a plain-language prep guide for the amphetamine screen & testing, including sample type and timing basics. The amphetamine screen is a laboratory test used to check for amphetamine-class substances in a collected sample.
What the results reflect
The test looks for amphetamine and related stimulant compounds, with the exact list of targets depending on the panel ordered. It reports a screened result against a detection threshold set by the laboratory. Cutoffs and targets can differ from one lab to another.
- Amphetamine
- Amphetamine-class compounds
- Screen result
- Confirmation testing
How to prepare for the Amphetamine Screen & testing
For a typical order, nothing unusual is required beforehand. Confirm any timing or fasting guidance with the collection site before your visit.
- Bring a photo ID along with your test order or requisition.
- Follow any instructions from the collection lab about timing, fasting, or hydration.
- Tell the collector about all prescription medications, over-the-counter drugs, and supplements you take.
- Ask the lab in advance whether an appointment is needed or whether walk-ins are accepted.
- Confirm the panel details and turnaround time so you know what to expect.
Fasting, timing, sample type, and what to bring
Fasting
Fasting is usually not required for this type of screen, but requirements can vary by lab and by the specific panel ordered. Confirm with your lab.
Best time to collect
Collection can generally be done whenever the lab is open, since no strict time-of-day window applies to this screen. Ask the lab about the best time to visit and about expected turnaround.
Sample type
Blood draw. The collector will explain the process before starting.
What to bring
- Your printed lab order or requisition form — the ordering physician prepares it for you after you order, and you print it (or fax it from your account) before visiting
- Your order confirmation email, in case the collection site asks to see it
- A written list of the medications and supplements you currently take
- A short-sleeved or loose-sleeved shirt for an easy blood draw
- Water to drink before the draw and a light snack for afterward, if your test requires fasting
- A government-issued photo ID (most collection sites verify identity at check-in)
You do not need an insurance card or a payment method at the collection site: the lab does not bill insurance, and you pay at order time, so there is no copay or deductible. The lab also provides the physician's requisition, so you do not need a separate doctor's referral.
Order process and what-to-bring details reflect the lab's published instructions, paraphrased in our own words. Confirm final requirements with the collection lab that will perform your draw.
What the collection involves
A trained collector obtains the sample, typically from a vein in your arm, and the specimen is sent to the laboratory for analysis. The visit is brief and usually takes only a few minutes.
Details worth confirming with the collection lab before your visit:
- Does this order require fasting or a specific collection time?
- What is the detection cutoff and turnaround time for this panel?
- Do you need an appointment, and what identification should I bring?
When this test is useful
A clinician may order an amphetamine screen as part of workplace, legal, or routine drug testing, or to evaluate suspected substance exposure. It can also be used to support monitoring in a treatment program.
Reading your results responsibly
Results are usually available in about one to three business days and are reported against the lab's own cutoffs or reference values. Detection thresholds and reporting formats vary by laboratory, so review results with your clinician.
General test information is compiled from publicly available reference material, including MedlinePlus (medlineplus.gov) and the Centers for Disease Control and Prevention (cdc.gov), and is reviewed for clarity. Preparation and what-to-bring details reflect the lab's published instructions, paraphrased into our own words. Preparation instructions, timing, and pricing vary by collection lab — always confirm them with the lab that will perform your draw.
Common questions
Frequently asked questions
Do I need to fast before an amphetamine screen?
Fasting is generally not required for this type of screen, but requirements can vary by lab and panel. Confirm with your lab before your visit.
How long do results take?
Turnaround is commonly about one to three business days, though it can vary by laboratory and by whether confirmation testing is needed.
What should I tell the collector before the sample is taken?
Share all prescription and over-the-counter medications and supplements you use, since some substances can affect screening results. Let them know about any relevant medical conditions as well.
What happens if my screen is positive?
A positive screen is usually followed by a more specific confirmation method. Your clinician will interpret the findings together with your history and other information.