Substance Abuse Screening Test (Serum/Plasma) for Adolescents Aged 18 Years or Younger
This test checks for the presence of certain substances in your blood that may indicate recent use, helping healthcare providers assess potential substance abuse in teens.
["A simple blood test to identify possible substance use before further evaluation is needed."]
Key facts at a glance
- LOINC
- 82821-0
- Short code
- HOUSEHOLDSUBSTANCEABUSEPRE18YO
- Synonyms
- —
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Critical range
- 0.5 N/A – —
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- ace
- Specimen volume
- 5 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
- Hemolysis max
- 500
- Lipemia max
- 1000
- Icterus max
- 500
- TAT
- 4–24 hours
- Order
- routine
Why This Test Is Done
Your doctor may order this test if they suspect you or someone you care for might be using drugs, alcohol, or other substances. It helps identify signs of misuse early so appropriate support or treatment can be provided.
What to Expect Before the Test
You’ll likely have a small needle inserted into your arm to draw blood. This usually takes a few minutes. If you’re nervous, let your healthcare provider know—they can help make it more comfortable.
What the Test Measures
The test screens for biomarkers (chemical indicators) of recent substance use, such as certain drugs, alcohol metabolites, or other substances in your blood. Results are not diagnostic alone but may prompt further testing or discussion with a healthcare provider.
What the Results Mean
Results are reviewed by a healthcare professional to determine if additional testing or follow-up is needed. Positive or borderline results may require confirmation with other tests or a detailed conversation about your health and habits.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance: This screening is critical for early detection of substance misuse in adolescents, as it can help identify at-risk individuals before health or behavioral issues worsen. It supports personalized care plans, including counseling, support groups, or treatment options tailored to your needs.
Short name
Household Substance Abuse Screen (18yo)
Frequently asked questions
What does a positive result mean?
How soon will I get my results?
Can I drink alcohol before this test?
Sources
- 1
- 2Lab Tests OnlineSource
- 3
Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed August 17, 2026. · Read our editorial policy