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Medical Examination Schedule under Singapore WSH (Medical Examination) Regs

Source: https://sso.agc.gov.sg/SL/WSHA2006-S516-2011

Occupational ExposureTypes of medical examinationsPre-placement medical examinations requirment Frequency for periodic medical examinations
arsenic or any of its compoundsClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
arsenic or any of its compoundsUrine arsenic examinationNot later than 3 months after the date employment commencedOnce every 12 months
arsenic or any of its compoundsLiver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimationsNot later than 3 months after the date employment commencedNA
arsenic or any of its compoundsA full size chest x‑ray examinationNot later than 3 months after the date employment commencedNA
cadmium or any of its compoundsClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
cadmium or any of its compoundsBlood cadmium estimationNot later than 3 months after the date employment commencedOnce every 12 months
cadmium or any of its compoundsUrine Beta2-microglobulin estimationNot later than 3 months after the date employment commencedOnce every 12 months
Inorganic leadClinical examinationNot later than 3 months after the date employment commencedOnce every 6 months
Inorganic leadBlood lead estimationNot later than 3 months after the date employment commencedOnce every 6 months
Inorganic leadHaemoglobinNot later than 3 months after the date employment commencedOnce every 6 months
Organic leadClinical examinationNot later than 3 months after the date employment commencedOnce every 6 months
Organic leadUrine lead estimationNot later than 3 months after the date employment commencedOnce every 6 months
manganese or any of its compoundsClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
manganese or any of its compoundsUrine manganese estimationNot later than 3 months after the date employment commencedOnce every 12 months
mercury or any of its compoundsClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
mercury or any of its compoundsUrine mercury estimationNot later than 3 months after the date employment commencedOnce every 12 months
benzeneClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
benzeneUrine tt-muconic acid or urine s‑phenylmercapturic acid estimationNot later than 3 months after the date employment commencedOnce every 12 months
benzeneHaemoglobin estimation and full blood countNot later than 3 months after the date employment commencedOnce every 12 months
benzenePeripheral blood filmNot later than 3 months after the date employment commencedOnce every 12 months
organophosphatesClinical examinationNot later than 3 months after the date employment commencedOnce every 6 months
organophosphatesRed blood cell acetylcholinesterase estimationNot later than 3 months after the date employment commencedOnce every 6 months
perchloroethyleneClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
perchloroethyleneUrine trichloroacetic acid estimationNot later than 3 months after the date employment commencedOnce every 12 months
perchloroethyleneLiver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimationsNot later than 3 months after the date employment commencedNA
trichloroethyleneClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
trichloroethyleneUrine trichloroacetic acid estimationNot later than 3 months after the date employment commencedOnce every 12 months
trichloroethyleneLiver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimationsNot later than 3 months after the date employment commencedNA
vinyl chloride monomerClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
vinyl chloride monomerLiver function tests including serum bilirubin, alkaline phosphatase, gamma glutamyl transpeptidase, alanine and aspartate aminotransferase estimationsNot later than 3 months after the date employment commencedOnce every 12 months
asbestosClinical examinationNot later than 3 months after the date employment commencedOnce every 36 months
asbestosA full size chest x‑ray examinationNot later than 3 months after the date employment commencedOnce every 36 months
raw cottonClinical examinationNot later than 3 months after the date employment commencedOnce every 12 months
raw cottonLung function tests (FEV1 and FVC) before and after 6 hours of exposure to cotton dust on the same dayNot later than 3 months after the date employment commencedOnce every 12 months
silicaClinical examinationNot later than 3 months after the date employment commencedOnce every 36 months
silicaA full size chest x‑ray examinationNot later than 3 months after the date employment commencedOnce every 36 months
Excessive noiseAn audiometric examination (where the air conduction is abnormal, to include bone conduction testing and auroscopic examination)Not later than 3 months after the date employment commencedOnce every 12 months
Work in a compressed air environmentClinical examinationNot later than 3 months after the date employment commencedWorking Pressure <1bar = Once every 3 months
Working Pressure <1bar = Every month

not more than 3 days prior to re‑employment in a compressed air environment if an employee has —
(i) not worked in a compressed air environment for more than 14 consecutive days OR
(ii)suffered from a ear, nose, throat or respiratory infection OR
(iii)suffered from any illness or injury necessitating absence from work for more than 3 consecutive days
Work in a compressed air environmentHeight, weight and body fat estimationNot later than 3 months after the date employment commencedOnce every 12 months
Work in a compressed air environmentAn audiometric examination (where the air conduction is abnormal, to include bone conduction testing and auroscopic examination)Not later than 3 months after the date employment commencedOnce every 12 months
Work in a compressed air environmentTest in a lockNot later than 3 months after the date employment commencedNA
Work in a compressed air environmentA full size chest x‑ray examinationNot later than 3 months after the date employment commencedNA
Work in a compressed air environmentRadiographic examination of shoulder, hip and knee jointsNot later than 3 months after the date employment commencedOnce every 12 month, and just before stopping work whichever is earlier in respect of working pressures at or exceeding one bar
Work in a compressed air environmentElectrocardiogram for workers who are 35 years of age and aboveNot later than 3 months after the date employment commencedOnce every 12 months
Work in a compressed air environmentLung function tests (FEV1 and FVC)Not later than 3 months after the date employment commencedOnce every 12 months

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