the yellowish appearance of cerebrospinal fluid that accompanies certain conditions, especially subarachnoid hemorrhage.
for infants with suspected congenital toxoplasmosis, serologic tests, mri or ct imaging of the brain, csf analysis, brain stem auditory evoked responses, and a thorough eye examination by an ophthalmologist should be done. csf abnormalities include xanthochromia, pleocytosis, and increased protein concentration. the placenta is inspected for characteristic signs of t. gondii infection (eg, placentitis). nonspecific laboratory findings include thrombocytopenia, lymphocytosis, monocytosis, eosinophilia, and elevated transaminases. pcr testing of body fluids, including csf, and tissues (placenta) can also be done to confirm infection. merckmanuals.com