Drug Test Results
How to read drug test results
The results of a drug test can be either positive or negative. A positive result indicates that drugs were detected in the sample, while a negative result indicates that no drugs were detected. If the test is positive, further testing may be necessary to confirm the results.
A negative drug test result
If you just get a Control line (C) and a Test line (T) on a drug test kit result within the specified time then this is a negative drug test result. ie no drug detected
A positive drug test result
If you just get a Control line (C) but no Test line (T) on a drug test kit result within the specified time then this is a positive drug test result.
The image below shows two drug test results. The first result is positive ie the C line is present and the T line is absent.
The second result is negative ie the C line is present and the T line is present.
Faint T line on drug test result
A faint T line with a visible C line is always a negative drug test result ie no drugs were detected above the cut-off levels for the drug test, on the sample being tested, as long as the line appeared within the read time for the particular drug test kit that you are using.
More info https://www.ukdrugtesting.co.uk/pages/faint-line-on-drug-test
What is an invalid drug test result?
If there is no C line and no T line this is an invalid drug test result. The most common reason for an invalid result on a drug test kit is insufficient specimen. The sample provided for testing may be too small in volume to conduct a valid drug test. This is more common in saliva testing than in urine testing.
Another possible reason is that you have not removed the cover from the drug test kit which means it is unable to absorb the sample. Most urine panel tests and direct saliva drug test kits have a cover which needs to be removed before the drug test kit can be used.
Codes on drug test kits and what do they mean
Drug tests may use various abbreviations to refer to different substances, including:
- THC - tetrahydrocannabinol (the primary psychoactive component in Cannabis also known as marijuana , weed )
- MDMA - 3,4-methylenedioxymethamphetamine (also known as ecstasy)
- KET Ketamine
- COC - cocaine
- AMP - amphetamines (such as methamphetamine and Adderall)
- MOP - opioids (such as heroin, codeine)
- OPI - opioids (such as heroin, morphine, and oxycodone)
- BZO - benzodiazepines (such as Valium and Xanax)
- MET - methamphetamine
- TML Tramadol
- BAR - barbiturates (such as phenobarbital and secobarbital)
- TCA - tricyclic antidepressants (such as amitriptyline and nortriptyline)
- PPX - propoxyphene (an opioid pain medication)
- BUP - buprenorphine (a medication used to treat opioid addiction)
- FEN - fentanyl (a powerful synthetic opioid)
- MTD - methadone (a medication used to treat opioid addiction)
- OXY - oxycodone (an opioid pain medication)
- K2 - synthetic cannabinoids (also known as "Spice" or "K2"
- GHB (gamma-hydroxybutyrate)
- CNB Cannabinol
- DCA Cathinone
- CFY Carfentanyl
- MPR Meperidine
- MEP Mephedrone
- MQL Methaqualone
- MDPV Methylenedioxypyrovaleron
- PGB Pregabalin
- PCP - phencyclidine (a hallucinogenic drug)
- LSD - lysergic acid diethylamide (a hallucinogenic drug)
- TZD Trazadone
- ZOL Zolpidem
It is important to note that different drug tests may use different abbreviations, and some substances may have multiple abbreviations depending on the context. If you have questions about the specific abbreviations used on a drug test kit, it is best to consult with the drug testing kit provider. It's also worth noting that the specific abbreviations used on a drug test may vary depending on the testing company or laboratory, and some tests may use more detailed abbreviations that specify the specific metabolites or compounds being tested for. If you're unsure about what a specific abbreviation means on a drug test result, it's best to consult with the drug testing provider.