The major hazards encountered in the biological lab work are diseases like infections and allergies which are caused by handling live animals. dissections, plant and animal tissues, microbes etc.

The infections are caused by ingestion, inhalation and penetration through cuts, scratches of the substances in the form of fumes, fine spray or aerosol produced during the work with biological materials.

While studying the blood samples, every time a fresh needle, gloves and disinfectant should be used for pricking the finger tip for the blood.

Precautionary measures include proper cleaning with disinfectants before and after the work, usage of masks, lab coats and rubber gloves during the work, safe disposal, incineration and sterilization methods etc.

Sharp objects used in biology lab work like razors, pins, scalpal, needles etc. can cause injury. So these should be handled properly and, after use should be properly covered and disposed of in covered boxes. Working with microbes requires special care, such as a different working area, use of disinfectants, proper handling of cultures and sterilization of the instruments. The cells should be killed before the disposal of cultures.