Medical Surveillance

Biological Monitoring

Biological Monitoring

Biological monitoring is one of important tools in the prevention of diseases due to the presence of toxic agents in the occupational environment. Biological monitoring is also commonly used as a screening tool to identify real exposures of chemicals absorbed into the body of employees and to assist in the medical treatment.

Biological monitoring refers to the collecting and analyzing of blood, urine, or other body fluids to look for evidence of chemical hazards in the workplace.

Goals of biological monitoring:

  • Evaluate exposures by comparing the measured dose in the body with air sampling result
  • Estimate body burden for medical surveillance
  • To investigate workers complaint that are not substantiated by airborne measurement
  • Evaluate the effectiveness of personal protective equipment such as gloves and respirators, and the impact of work practices.
  • Compliance with recommended or mandated biological exposure limit

We also provide Biological monitoring services for your employees who may have been over-exposed to potential chemical hazards at the workplace

Our biological monitoring examination includes the identification of hazardous substances, such as:


  • Cadmium (Cd)
  • Cobalt (Co)
  • Lead (Pb)
  • Arsenic (As)
  • Cadmium (Cd)
  • Chromium (Cr)
  • Cobalt (Co)
  • Mercury (Hg) in urine

Organic :

  • Benzene in urine, metabolite as t,t-Muconic acid in urine
  • Toluene in urine
  • Xylene in urine, metabolite as Methyl Hippuric Acid in urine
  • Cyclohexanone in urine
  • Methyl n-Butyl Ketone (MEK)