Smear preparing apparatuses for preparing a smear of a specimen on a glass slide are described that include a memory for storing smearing conditions in connection with pertinent information required for establishing the smearing condition; and a controller for retrieving one of the stored smearing conditions corresponding to the pertinent information of the specimen from the memory and for determining it as the smearing condition of the specimen. Methods of preparing sample smears on a glass slide are also described that include receiving condition identification data; storing smear preparing conditions correlated with the condition identification data; retrieving the smear preparing conditions correlated with the condition identification data; and applying the sample smear to the glass slide based on the smear preparing conditions.