Drugs and Alcohol Tests

📅 Last Updated: May 2026  |  🩺 Medically Reviewed by: Edward Salko, D.O., Medical Director  |  🧪 Lab Partner: Labcorp

Drug and substance testing through Personalabs covers two distinct categories — drug screening panels that detect the presence of substances, and therapeutic drug monitoring tests that measure medication levels in the bloodstream for patients managing chronic conditions.

Drug screening tests: Drug screens detect commonly abused substances including marijuana (THC), cocaine, opiates, amphetamines, benzodiazepines, PCP, and others. These are used for personal awareness, pre-employment preparation, and health monitoring.

Therapeutic drug monitoring: Many prescription medications require regular blood level monitoring to ensure they remain in the therapeutic range — high enough to be effective, low enough to avoid toxicity. Common medications monitored include:

• Lithium — used for bipolar disorder; narrow therapeutic range requiring close monitoring
• Digoxin — heart medication with a very narrow safe range
• Anti-epileptic medications (phenytoin, valproic acid)
• Immunosuppressants (cyclosporine, tacrolimus) for transplant patients
• Certain antibiotics and antifungals at high doses

Who orders these tests:

• People monitoring their own prescription medication levels between doctor visits
• Individuals preparing for employment drug screening
• People tracking substance clearance from their system
• Patients managing chronic conditions that require therapeutic drug monitoring

Physician order included. No insurance required. Results in days through Labcorp. HSA and FSA eligible.

Drugs and alcohol use is regularly monitored for various purposes, including pre-employment screening, legal compliance, and treatment regulation. While you can avail of different drug and alcohol tests from many labs, from general to specific substances, you will get the best value of its cost if the test can be done quickly, efficiently, and with confidentiality.

The Role Of Drugs and Alcohol Tests

Alcohol, recreational drugs, and even prescription drugs have to be regulated. When consumed beyond the tolerable amount, they can cause physical and psychological changes that may cause harm to the individual and the people around them.

For example, alcohol intoxication leads to loss of inhibition, a temporary decrease in memory and attention capacities, and a lack of body coordination. However, once intoxication turns to alcohol poisoning, the impact can be even more severe.

On the other hand, drug dependency also bears a myriad of adverse health impacts on its own, which primarily links to symptoms of addiction like sleep problems, mental confusion, and other cognitive problems. You can also experience similar side effects and more under unregulated medication intake.

Both drugs and alcohol use or consumption have long-term effects on the body affecting their overall health and wellness.

As a result, public and private institutions require drug and alcohol tests. Fortunately, you can quickly get hold of alcohol urine tests and blood drug tests without going through an elaborate process.

Just order the particular test you need complete with a doctor’s order, then take the screening procedure at one of our partner patient service centers.

Types of Tests to Detect Drugs and Alcohol

Traces of drugs and alcohol can be detected through blood or urine samples. The substances are isolated for identification and measured to determine toxicity levels.

For prescription drugs, the screening goes hand-in-hand with treatment. Alcohol can be detected through urine or blood tests. While drug tests related to recreational use can come as a panel or package via blood drug test.

Check out the tests you can order to detect drugs and alcohol.

Blood Tests

• Performance Enhancing Drug Profile Blood Test
• Carbohydrate-deficient Transferrin (CDT) Blood Test
• Theophylline Blood Test
• Digoxin Blood Test
• Phenytoin Dilantin Blood Test
• Carbamazepine Tegretol Blood Test
• Tacrolimus, Highly Sensitive, LC/MS/MS

Urine Tests

• Alcohol Urine Test (Ethanol) 
• Benzodiazepine Urine Test
• Methadone Urine Test
• Drug Monitoring Panel

Who Should Get Tested For Drugs and Alcohol?

People applying for a job usually need drug and alcohol tests as part of their pre-employment requirements. Plus, workplace drug testing may also come around regularly. Likewise, those undergoing drug therapy will need to get tested to evaluate the effectiveness and side effects of the medication.

When To Do Drugs and Alcohol Testing

Take drug and alcohol testing near you if you are mandated by your company or employer – even more so if you’re a federal employee. It’s also imperative to have the appropriate test if you’re undergoing drug therapy for specific health conditions.

Get Tested for Drugs and Alcohol Near You

Accurate tests involving illegal and regulated substances can always make your case for you. Undergo drug and alcohol testing when you order our tests. Find which of our over 4,000 partner labs is closest to you.

Frequently Asked Questions

What does a standard drug screen test for? A standard 10-panel drug screen tests for marijuana (THC), cocaine, opiates, amphetamines, methamphetamines, benzodiazepines, barbiturates, methadone, propoxyphene, and PCP. A 5-panel screen covers the most common substances: THC, cocaine, opiates, amphetamines, and PCP.

What is therapeutic drug monitoring? Therapeutic drug monitoring (TDM) measures the concentration of a specific medication in your blood to ensure it stays within the therapeutic range — effective but not toxic. It is most commonly used for medications with narrow therapeutic windows like lithium, digoxin, anti-epileptics, and immunosuppressants.

How long do drugs stay detectable in blood? Detection windows vary by substance and test type. Most drugs are detectable in blood for 1–3 days after use. Marijuana can be detectable in urine for up to 30 days for heavy users. Blood tests generally have shorter detection windows than urine tests.

Can I order a drug test without a doctor’s order? Yes. Personalabs provides a physician-approved lab order with every purchase. No doctor visit, referral, or insurance required. Results delivered to your private account in 24–48 hours.

Are drug test results confidential? Yes. Results are delivered only to your private Personalabs account. Your employer, insurance company, and physician are never notified unless you choose to share results yourself.