⏳ Detection windows close fast. Come in within 24 hours if possible.
GHB clears urine in 4 to 8 hours. Cocaine and amphetamines within 24 to 48 hours. The sooner you come in, the more information the test can provide. If you are unsure whether testing is still useful, WhatsApp us and we will advise you based on the substance you suspect and when it happened.
What Does the Drink Spiking Screen Test For?
Every patient is assessed by a licensed English-speaking doctor on arrival. We test for the substance classes most commonly encountered in drink spiking incidents in Bangkok, including sedatives, depressants, stimulants, and alcohol.
Benzodiazepines
Rohypnol (flunitrazepam), diazepam (Valium), alprazolam (Xanax). The most common class used in spiking. Causes sedation, memory impairment, and reduced resistance.
Amphetamine / Methamphetamine
Stimulants sometimes added to induce altered or confused states. Also tested when unknown substance exposure is a concern.
Opiates
Morphine and codeine derivatives. Can cause extreme sedation and confusion. Detectable in urine for 2 to 4 days after exposure.
Cocaine Metabolites
Detects benzoylecgonine, produced when cocaine is metabolised by the liver. Present in urine for 2 to 4 days after exposure.
Cannabis (THC)
Occasionally added to food or drink. THC metabolites remain detectable for several days — one of the more reliable tests when time has passed.
Barbiturates
Older sedative class encountered in some spiking incidents. Causes heavy sedation and marked memory loss even at low doses.
Blood Ethanol (Alcohol Level)
Measures actual blood alcohol concentration. Useful when your level of intoxication was disproportionate to how much you drank. Detectable up to 12 hours after significant consumption.
⚠️ Note on GHB and Ketamine
GHB and ketamine are frequently cited in Bangkok nightlife incidents. Neither is included in a standard urine immunoassay panel. GHB clears urine within 4 to 8 hours; ketamine within approximately 24 hours. If you suspect either substance and are presenting within those windows, tell the doctor immediately — specific send-out testing may be available. A negative panel result does not rule out GHB or ketamine exposure.
Drink Spiking Screen Costs at Doctor Bangkok
The panel can be run as a full screen or as individual tests based on the substance you suspect and your timeline. Your doctor will advise which tests make sense before any testing begins.
Urine Drug Tests
| Substance Screened | Price (THB) |
|---|---|
| Benzodiazepines (Rohypnol, Valium, Xanax) | 600 |
| Amphetamine / Methamphetamine | 500 |
| Opiates (morphine, codeine derivatives) | 600 |
| Cocaine Metabolites | 800 |
| Cannabis (THC) | 600 |
| Barbiturates | 1,300 |
Blood Test
| Test | Price (THB) |
|---|---|
| Blood Ethanol (Alcohol Level) | 900 |
Prices are per individual test
Prices exclude doctor consultation fees, nursing fees, and clinic service charges. WhatsApp us your situation and we will confirm the cost and which tests are recommended before you come in.
How Long Does Each Substance Stay Detectable?
Detection windows vary between substances and depend on the dose, your metabolism, hydration, and body weight. The sooner you come in, the more information the test can provide.
| Substance | Urine Window | Blood Window |
|---|---|---|
| Benzodiazepines (short-acting, e.g. Rohypnol) | Up to 3 days | Up to 24 hours |
| Benzodiazepines (long-acting, e.g. diazepam) | Up to 7 days | Up to 48 hours |
| Amphetamine / Methamphetamine | 1 to 3 days | Up to 24 hours |
| Opiates | 2 to 4 days | Up to 12 hours |
| Cocaine Metabolites | 2 to 4 days | Up to 12 hours |
| Cannabis (THC) | 3 to 7 days | Up to 24 hours |
| Barbiturates (short-acting) | 2 to 4 days | Up to 48 hours |
| Blood Ethanol | Up to 24 hours | Up to 12 hours |
| GHB (not in standard panel) | 4 to 8 hours only | <4 hours |
| Ketamine (specific test required) | Up to 24 hours | Up to 12 hours |
What Happens When You Come In
You do not need a police report, a formal complaint, or a clear account of what happened to access this service. Walk in at any time. Here is what to expect.
Confidential consultation
A doctor will take a brief, private history — where you were, what you drank, when symptoms started, and what you experienced. You do not need all the answers. Nothing is shared with any third party without your written consent.
Sample collection
Urine and, if requested, blood samples are collected on-site. The process takes a few minutes. Our staff will guide you through collection without requiring you to explain your situation to multiple people.
Laboratory testing
Samples are sent to our laboratory. Urine results return in 1 to 2 days. Blood ethanol takes up to 3 days. You can receive results by WhatsApp or collect them in person.
Results review and documentation
A doctor reviews your results and explains what was and was not detected. If results are needed for legal or medical purposes, we can provide a formal written report on clinic letterhead.
Do I Need to Come In? Signs You Should Get Tested
You do not need to be certain your drink was spiked. Any of these situations is a sufficient reason to come in.
Memory gaps you cannot account for
Periods of the evening you cannot recall, especially if they extended beyond what you would expect from your alcohol intake.
Intoxication out of proportion to what you drank
You felt far more intoxicated than the number of drinks you consumed would explain.
Unexplained sedation, disorientation, or confusion
You woke up feeling sedated or confused in a way that seemed disproportionate to the evening, or others reported concern about your behaviour.
Concern about assault or exploitation
You woke up in an unexpected location, with missing possessions, or with any concern that something happened while you were not fully aware.
Police report, insurance, or legal documentation
You need documented evidence of substance exposure for a formal complaint, insurance claim, or legal matter.
You simply want to know
Uncertainty is reason enough. A negative result still provides documented evidence that you acted promptly. Knowing is better than not knowing.
Drink Spiking in Bangkok: What You Need to Know
Bangkok’s nightlife areas — Sukhumvit, Nana, Asok, Thong Lor, RCA — attract millions of visitors each year. The combination of busy venues, language barriers, and the ready availability of prescription sedatives creates a higher-than-average risk environment for drink tampering.
Benzodiazepines such as Rohypnol and clonazepam are controlled but accessible in Thailand. GHB is colourless, tasteless, and clears urine within hours. Ketamine — widely available as a veterinary anaesthetic — has appeared in reported incidents. Alcohol itself is sometimes used in quantities well beyond what the person believed they consumed.
If something felt wrong after a night out in Bangkok, that instinct is worth acting on. The window to detect most substances closes fast. Walk in or WhatsApp us now.
Using Your Test Results for Legal or Insurance Purposes
Laboratory results from a registered clinic carry evidential weight. If you are considering a police complaint in Thailand, documented evidence of a substance in your system significantly strengthens your account. Thai police are more likely to open an investigation when a complaint is supported by medical records.
If you are filing a travel insurance claim or need documentation for your employer or embassy, we can provide a formal clinical summary on clinic letterhead. This document records the substances tested, the results, and the date and time of testing relative to the reported incident.
📍 Get tested first, then file the report
You do not need a police report before testing. Getting tested first is the recommended sequence — it preserves evidence before it clears your system. Once you have your results, you can file the report with documentation in hand. Royal Thai Police stations in tourist areas (Thong Lor, Asok, Nana) are experienced with these complaints.
Frequently Asked Questions
How soon after the incident should I get tested?
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As soon as possible. The optimal window for most substances is within 24 hours of exposure. Benzodiazepines and cannabis can remain detectable for 3 to 7 days, but faster-clearing substances like GHB are gone within 4 to 8 hours. Do not assume you have more time — WhatsApp us first and we will advise whether testing is still useful based on what you suspect and when it happened.
What are the most common substances used in drink spiking in Bangkok?
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Benzodiazepines — particularly Rohypnol (flunitrazepam) and clonazepam — are the most commonly encountered class in Bangkok nightlife areas. GHB is also frequently cited because it is colourless, tasteless, and clears the system within hours. Ketamine has appeared in some reported cases. Alcohol is also used in quantities well beyond what the person believed they consumed, which is why the blood ethanol test is included in this panel.
Will GHB or ketamine show up on this test?
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Not on the standard urine panel. GHB is not included in routine immunoassay screens and clears urine within 4 to 8 hours of ingestion. Ketamine clears within approximately 24 hours and requires specific testing. If you suspect either substance and are presenting within those windows, tell the doctor immediately — we will discuss whether specific testing is possible in your case. A negative standard panel result does not rule out GHB or ketamine exposure.
Can my test results be used as evidence in a police report?
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Yes. Laboratory results from a registered clinic carry evidential weight and can be submitted as supporting documentation in a Thai police complaint. We can provide a formal written report on clinic letterhead documenting the substances tested, the findings, and the timing relative to the reported incident.
Do I need to file a police report before coming in for testing?
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No. You can come in at any point, with or without a police report. Getting tested first is the recommended approach — it preserves evidence before it clears your system. If you later decide to file a report, your results will be ready to submit. We are not a reporting authority and will not contact police without your written consent.
Is my visit confidential?
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Yes. Your results and the details of your visit are not shared with any third party without your written consent. We will not contact your hotel, employer, or any authority on your behalf. The only exception is the universal clinical obligation to act in cases of immediate risk to life. Everything you share with us, and everything we find, stays between you and your doctor.
What if I cannot remember what happened?
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Memory loss is itself a clinical finding and does not disqualify you from testing. Tell the doctor what you do remember — where you were, roughly what time you started feeling unwell, and what you can reconstruct from messages, photos, or accounts from others. That information helps guide which substances to prioritise. You do not need a coherent account of events to access this service.
Can I get documentation even if my results come back negative?
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Yes. A negative result documents that you came in for testing at a specific time following a specific incident. This is relevant for insurance and legal purposes — it shows you acted promptly, and any absence of findings can be explained by the short detection window of the suspected substance. We can provide a clinical summary regardless of outcome.
Think Something Was Wrong?
Get Tested Before the Window Closes.
Most spiking substances clear urine within 24 to 72 hours. Walk in to our Sukhumvit Soi 13 clinic or WhatsApp us now. Confidential. English-speaking doctors. No appointment needed. Open 24/7.
Soi Sukhumvit 13,
Khlong Toei, Watthana
Bangkok 10110