List of prescribed hazards and specific medical tests required for workers exposed to these hazards (Singapore)
| Prescribed hazard | Medical test(s) required |
|---|---|
| Source: Guidelines for designated factory doctors, 3rd edn. The Factories (Medical Examinations) Regulations, Singapore, 1997. | |
| Arsenic and compounds | Pre-employment and annual early morning urine arsenic level, pre-employment liver function test, and chest x ray examination |
| Asbestos | Full size chest x ray examination (pre-employment and once in 36 months) |
| Benzene | Pre-employment and annual haemoglobin, full blood count, peripheral blood film, and mid-week end of shift urine phenol |
| Cadmium and its compounds | Pre-employment and annual blood cadmium, urine β2 microglobulin |
| Compressed air (frequency depends on working pressure) | Pre-employment and annual audiometry, lung function test, x ray examination of shoulder, hip and knee joints, electrocardiogram (for those >35 years), pre-employment chest x ray examination |
| Cotton | Pre-employment and annual lung function tests: FEV1 and FVC |
| Lead (inorganic) and its compounds | Pre-employment and six monthly blood lead and haemoglobin levels |
| Manganese and its compounds | Pre-employment and annual early morning urine manganese |
| Mercury and its compounds | Pre-employment and annual early morning urine mercury |
| Noise | Pre-employment and annual audiometry |
| Organophosphates | Pre-employment and six monthly red blood cell acetylcholinesterase |
| Perchloroethylene | Pre-employment and annual mid-week end of shift urine trichloroacetic acid, pre-employment liver function tests |
| Free silica | Full size chest x ray examination (pre-employment and once in 36 months) |
| Trichloroethylene | Pre-employment and annual mid-week end of shift urine trichloroacetic acid, pre-employment liver function tests |
| Vinyl chloride monomer | Pre-employment and annual liver function tests |