Veterinary microscopes are used for diagnostic methods similar to standard human laboratory medicine. Diagnosis becomes a bit more complicated because patients are unable to communicate, and many of the animals respond differently to treatment. A high power biological veterinary microscope is useful for examining bodily fluids and skin or hair samples. These can often indicate parasitic infections, allergies, neoplastic disease or microbial infections. More detailed veterinary microscope lab work is generally required for pathology, microbiology, molecular biology, hematology and immunology-based tests. The most common veterinary microscopy techniques utilized include brightfield, darkfield, phase contrast and occasionally fluorescence. Stereo veterinary microscopes are used for basic quick viewing of samples at lower magnification and simple dissecting work.