BAL Cytology Service

When we do a BAL cytology at the Tufts Center for Equine Respiratory Health,  you not only get a cytological diagnosis, but you also have access to our clinicians for advice on treatment.  You may send BAL fluid or if you are comfortable making slides, please send them.  If you need detailed advice on doing a BAL in the field, please check out the page (above) that is titled BAL powerpoint.  If you are comfortable performing a BAL, but haven’t made your own slides before, it’s quite easy – see the next page on ‘how to make good cytology slides’.

If you are sending fluid, please send at least 2 red tops and 2 purple tops on ice by overnight mail to:


Dr. Melissa Mazan

Hospital for Large Animals

Tufts Cummings School of Veterinary Medicine

200 Westborough Road

North Grafton, MA 01536

Please call to let us know that a sample is coming –


Please make sure to send the history, signalment, physical examination findings, and recent treatments and response to treatment