Poliovirus may be isolated from pharyngeal secretions during the first week of the disease, and from feces during several weeks.  Isolation of virus from the cerebrospinal fluid (CSF) is diagnostic, however this is rarely accomplished.  Following isolation, the serotype and origin of the virus may be characterized by genomic sequencing.  The CSF may show unspecific findings of aseptic meningitis, which are common to those found in infections by other viruses.  When the virus cannot be isolated, serologic tests, using antibodies targeted to the 3 different serotypes may be used.
Polio laboratory findings
Post-polio syndrome laboratory findings
Hearing impairment laboratory findings
Beriberi laboratory findings
Influenza risk factors
Rubella laboratory findings
Down syndrome laboratory findings
Gestational diabetes laboratory findings