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Blood Drug Screen: Complete Guide | AMH Nationwide

Comprehensive Blood Drug Screen Guide for Accurate Testing

The blood drug screen guide provides detailed information on what the test detects, who orders it, and the collection process. This test measures drug presence in blood samples, offering a detection window suited for recent use. Testing is routed through five national lab networks. Call (877) 731-6362 to begin.

OVERVIEW

What is a blood drug screen?

A blood drug screen is a laboratory test that detects the presence of drugs or their metabolites in a blood sample. It is used to determine recent drug use, often within hours to a few days prior to collection. Blood testing provides direct measurement of substances circulating in the bloodstream, offering a more immediate detection window than urine or hair tests.

ORDERING

Who orders a blood drug screen?

Blood drug screens are ordered by employers, medical professionals, legal entities, and individuals requiring confirmation of recent drug use or abstinence. Employers may use this test for pre-employment screening, post-accident analysis, or random testing when immediate detection is critical. Medical providers order blood tests for diagnostic or treatment monitoring purposes.

DETECTION WINDOW

What drugs can a blood drug screen detect and what is the detection window?

Blood drug screens detect a range of substances including amphetamines, cocaine, opioids, benzodiazepines, cannabinoids, and others depending on the test panel. The detection window is generally short, typically from a few hours up to 48 hours after drug intake, as drugs are metabolized and cleared from the bloodstream quickly. This makes blood testing ideal for identifying recent drug exposure.

Amphetamines: detected within 12-48 hours
Cocaine metabolites: detected within 12-48 hours
Opioids: detected within 12-48 hours
Benzodiazepines: detection varies by compound, generally 24-48 hours
Cannabinoids: typically up to 24 hours in blood
COLLECTION

How is a blood drug screen collected?

Blood drug screen collection involves a certified phlebotomist drawing a blood sample, usually from a vein in the arm using standard venipuncture techniques. The sample is then securely packaged and sent to one of five national lab networks: Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox for analysis.

Collection performed by trained personnel
Sample volume depends on the test panel
Chain of custody procedures apply for legal or employment testing
Specimens transported under controlled conditions to maintain integrity

Ready to Schedule Your Blood Drug Screen?

Call (877) 731-6362 to speak with a representative who will guide you through the process and connect you to a local collection site.

PROCESSING

How does the lab process a blood drug screen?

Once the blood sample arrives at the laboratory, it undergoes initial screening using immunoassay or chromatography techniques to detect drug presence. Any non-negative results are reviewed and confirmed by a certified Medical Review Officer (MRO) to ensure accuracy and compliance with regulatory standards. Final reports are then sent to the ordering party.

GETTING STARTED

How do I get started with a blood drug screen?

To begin a blood drug screen, you must contact AMH Nationwide by phone at (877) 731-6362. AMH provides the lab order and directs you to a nearby collection site within the five national lab networks. There is no online ordering option. Pricing varies depending on the test panel and detection window, so call for a personalized quote.

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AMH Nationwide Customer Service

AMH Nationwide is BBB A+ accredited and routes every order through Quest Diagnostics, LabCorp, Omega Labs, United States Drug Testing Labs, or ExperTox, all of which use multiple lab certification agencies and standards such as SAMHSA-aligned laboratory protocols, the ANSI National Accreditation Board for forensic testing and calibration, the College of American Pathologists (CAP), and Clinical Laboratory Improvement Amendments (CLIA). Every non-negative screen is reviewed by a certified Medical Review Officer as part of standard processing before a result is released, and chain-of-custody documentation is maintained on every collection. This page does not constitute medical or legal advice.

Last updated: July 2026
Frequently Asked Questions

Common Questions

No. Blood drug screens detect drugs for a shorter period, typically hours to two days, whereas urine tests can detect some drugs for several days to weeks after use.

No. DOT-regulated testing requires the federally certified urine protocol under 49 CFR Part 40. Blood drug screens are used primarily for non-DOT or medical purposes.

Standard panels often test for amphetamines, cocaine, opioids, benzodiazepines, cannabinoids, and sometimes additional drugs depending on the requester’s needs.

Results typically take 1 to 3 business days after the lab receives the sample, depending on the complexity of the testing panel.

Fasting is generally not required for blood drug screens unless specified by the medical provider ordering the test.

Any non-negative result is reviewed by a certified Medical Review Officer who may contact the donor for verification before final confirmation and reporting.

Ready to get started?

AMH Nationwide provides the lab order and arranges collection nationwide. Every non-negative result reviewed by a certified Medical Review Officer. Call (877) 731-6362 or contact us.

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