Kitten nearly 2 months old, hospital tested positive for panleukopenia but blood count normal and home test negative—what now?

Based on your description it is not yet confirmed; diagnosis needs the panleukopenia antigen test plus blood work and clinical signs. Due to viral load differences, hospital PCR and strips have 80-85% accuracy, so with no clinical signs do a PCR nucleic-acid test for the most accurate confirmation.