--- title: "Blood Drug Screen: What It Screens For | AMH Nationwide" description: "Blood drug screen what it screens depends on panel size and substances tested. Learn specifics and call (877) 731-6362 for lab collection details." author: "AMH Nationwide" date: "2026-08-27" tags: ["blood drug screen what it screens"] canonical: "https://amhnationwide.com/blood-drug-screen-what-it-screens/" last_updated: "2026-08-27" --- # Blood Drug Screen: What It Screens For | AMH Nationwide **By AMH Nationwide** | August 27, 2026 Blood drug screen what it screens depends on panel size and substances tested. Learn specifics and call (877) 731-6362 for lab collection details. --- Blood drug screen what it screens varies by the size of the testing panel, covering substances such as amphetamines, cocaine, opioids, and more. This test detects drugs present in the bloodstream, with detection windows typically shorter than urine tests. Panels range from basic to extended, affecting which substances are identified. Call (877) 731-6362 to arrange testing through national lab networks. OVERVIEW ## What substances does a blood drug screen detect? A blood drug screen what it screens depends mainly on the drug panel selected for testing. Common panels include substances such as amphetamines, cocaine, cannabinoids (THC), opioids, benzodiazepines, barbiturates, methadone, and phencyclidine (PCP). Larger panels may detect additional synthetic opioids, designer drugs, and other prescription medications. The blood drug screen directly detects drugs or their metabolites in the bloodstream, providing a snapshot of recent drug use, often within hours to a day depending on the substance. This differs from [urine](https://amhnationwide.com/urine-drug-testing/) or hair testing, which have longer detection windows but detect different metabolites. PANEL DETAILS ## How does panel size affect what a blood drug screen detects? Panel size directly determines the number and type of substances detected in a blood drug screen. Basic panels test for 5-7 common drug classes, while extended panels can screen for 10 or more substances including synthetic and prescription drugs. Choosing a specific panel depends on the testing requirement and substances of concern. Employers or medical professionals select the panel to fit the purpose of the screen. COMMON SUBSTANCES ## Which specific substances are commonly included in blood drug screen panels? Common substances screened in blood drug tests include: – Amphetamines (including methamphetamine) – Cocaine and its metabolites – THC (marijuana) – Opiates such as morphine, codeine, and heroin metabolites – Benzodiazepines (anti-anxiety medications) – Barbiturates (sedatives) – Methadone (used in opioid treatment) – Phencyclidine (PCP) Extended panels may add synthetic opioids, tramadol, fentanyl, or other prescription drugs. PROCESS ## How is a blood drug screen collected and processed? The blood drug screen collection is performed at one of five national lab networks: [Quest Diagnostics](https://www.questdiagnostics.com/), [LabCorp](https://www.labcorp.com/), Omega Labs, United States Drug Testing Labs, or ExperTox. AMH provides the lab order and directs the requester to a collection site; there is no online ordering. After collection, the blood sample is analyzed for the selected panel substances. Any non-negative results undergo review by a certified Medical Review Officer (MRO) to ensure accuracy and interpret findings. ## Arrange Your Blood Drug Screen Testing To determine which blood drug screen panel fits your needs and to schedule collection through one of the five national lab networks, call (877) 731-6362. AMH will provide the lab order and direct you to a collection site. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) DETECTION ## What is the detection window for substances in a blood drug screen? A blood drug screen what it screens detects substances present in the bloodstream, typically within hours up to 24-48 hours after use, depending on the drug. This short [detection window](https://amhnationwide.com/hair-follicle-drug-test-detection-window/) makes blood testing suitable for identifying recent or current drug use rather than long-term history. Because of this, blood drug screens are often used in clinical or emergency settings where immediate drug presence is relevant. USAGE ## Who typically orders blood drug screens and why? Blood drug screens are ordered by medical professionals, employers, or legal authorities when recent drug use needs to be confirmed. They are common in clinical toxicology, workplace safety testing for safety-sensitive positions, or forensic investigations. Unlike urine drug tests, blood drug screens provide direct evidence of drugs circulating in the body, which is critical in some medical or legal contexts. AMH Reviewed & Maintained By 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](https://www.samhsa.gov/workplace/drug-testing)-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 You May Also Need [Nail Drug TestingNo head or body hair available? A 5-panel fingernail test covers a similar look-back window.Learn more →](https://amhnationwide.com/5-panel-fingernail-drug-test/)[ChildGuard: Environmental ExposureConcerned about a child or loved one? ChildGuard screens for exposure to drugs in their environment.Learn more →](https://amhnationwide.com/5-panel-hair-drug-test-environmental-exposure-childguard/)[Shorten the Detection WindowShortened options like 30 and 60 day hair panels are also available, useful when a urine test’s 1-3 day window is too short.Learn more →](https://amhnationwide.com/30-day-hair-drug-test/)[Hair ETG Alcohol TestAlso need alcohol testing? The hair ETG test screens for alcohol use, and can be added to the same collection.Learn more →](https://amhnationwide.com/etg-and-peth/) Frequently Asked Questions ## Common Questions Yes, blood drug screens commonly test for THC, the active compound in marijuana. Detection typically lasts up to 24 hours after use, depending on frequency and dosage. Results are usually available within 1 to 3 business days after the blood sample is collected, depending on the lab network and panel complexity. Not always. Synthetic opioids like fentanyl may require an extended or specialized panel. Panel size determines if these substances are screened. Blood drug screens detect recent use with a shorter window and provide direct evidence of drugs in the bloodstream. Urine tests detect metabolites over longer periods but do not show current blood levels. No. AMH provides the lab order and directs you to one of the five national lab networks for blood collection. There is no online ordering or at-home collection. Any non-negative result is reviewed by a certified Medical Review Officer to confirm accuracy and rule out false positives before final reporting. Sources • [SAMHSA – Mandatory Guidelines for Federal Workplace Drug Testing Programs](https://www.samhsa.gov/workplace/drug-testing) • [U.S. DOT – 49 CFR Part 40 – Procedures for Transportation Workplace Drug and Alcohol Testing Programs](https://www.transportation.gov/odapc/part40) • [CDC – National Center for Health Statistics – Drug Use FastStats](https://www.cdc.gov/nchs/fastats/drug-use.htm) • [Quest Diagnostics – Employer Solutions, Hair Testing Methodology](https://www.questdiagnostics.com/) • [LabCorp – Occupational Testing Services](https://www.labcorp.com/) ## 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. [Call (877) 731-6362](tel:+18777316362)[Contact Us](https://amhnationwide.com/contact-us/) --- **Need a drug, alcohol, HIV or STD test?** AMH Nationwide is a national lab testing agency operating since 2004, with more than 20,000 collection sites across the United States. Hair, urine, fingernail and blood testing, panels from 5 through 19, for individuals and employers. - Call: (877) 731-6377 - Find a collection site: https://amhnationwide.com/locations/ - Full page: https://amhnationwide.com/blood-drug-screen-what-it-screens/