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This application is a service of the Singapore Government.

Health Sciences Authority

Workplace Drug Testing


The purpose of performing workplace drugs testing is to prevent drugs and alcohol related accidents at workplace, and to promote a drug-free culture in general. This is typically carried out by drug or substances of abuse screening in urine specimens.

How is the Testing Conducted?

Urine sample from the applicant/employee should be properly collected and sent to a laboratory for analysis. An appropriate amount for screening for drugs of abuse is 15-20 mL, collected in a sterile plastic container without preservative.The specimen bottle should be clearly labelled with the donor's name and identification number, and sealed. Special care should be taken to ensure that the specimen obtained is authentic and not subsequently adulterated.

Drug Testing Request Form

The request form should provide information identifying the donor (name and identification number). The test(s) requested and the screening cut-offs to be used should be indicated. Alternatively, please call the laboratory (6213-0740) for the request form for workplace drug testing / occupational monitoring.

Substances Analysed for Workplace Drug Testing

The following substances are available for workplace drug testing by our laboratory:

• Ethanol1
• Amphetamines1
• Benzodiazepines1
• Buprenorphine1
• Cannabinoids (also known as Marijuana/THC)1
• Cocaine metabolite (Benzoylecgonine)1
• Ketamine1
• Opiates1
• Barbiturates2
• Phencyclidine (PCP)2
• Propoxyphene2
• Methadone2
• Methaqualone2

1Test will be done on Mondays, Wednesdays and Fridays (except public holidays)
2Test will be done on Fridays only (except public holidays)

How Long will a Drug be Detectable in Urine?

The duration for which a drug is detectable in urine is dependent on a number of variables, such as, metabolic rate, dose, route of administration, and the cut off concentration used to detect the drug. Generally, the drugs in our test panels are detectable for 1-2 days after consumption.

Occupational Biological Monitoring


The CFT Unit also provides service for occupational biological monitoring of cyanide and toluene in blood. This is to ensure that the workers are not exposed to unhealthy amount of cyanide or toluene in their working environment.

Please note that these two tests are not performed routinely. It is advisable to batch the submission of the samples for a faster turn-around time.