Table 2.

Viral serological and PCR results

Investigations	Results	Interpretation	Normal range
Heterophile Ab	Positive	Positive	Negative
EBV VCA IgM EIA	>160.0	Positive	≤35.9 U/mL (negative)
EBV VCA IgG EIA	99.9	Positive	≤17.9 U/mL (negative)
EBV EA Ab EIA	>150.0	Positive	≤8.9 U/mL (negative)
EBNA IgG EIA	<3.0	Negative	≤17.9 U/mL (negative)
CMV IgM Ab	<8.0	Negative	≤29.9 AU/mL (negative)
CMV IgG Ab	0.23	Negative	≤0.59 U/mL (negative)
CMV PCR	Not detected	Negative	Not detected
Parvovirus B19 IgM Ab	1.8	Positive	≤0.8 index (negative)
Parvovirus B19 IgG Ab	0.2	Negative	≤0.8 index (negative)
Parvovirus B19 IgM Ab*	1.0	Negative	≤0.8 index (negative)
Parvovirus B19 IgG Ab*	0.4	Equivocal	≤0.8 index (negative)

*Parvovirus serological tests were repeated 1 week after the initial tests due to the possibility of an initial non-specific polyclonal IgM response.

Ab, antibody; CMV, cytomegalovirus; EBV EA, Epstein-Barr virus early antigen; EBNA, Epstein-Barr virus nuclear antigen; EBV VCA, Epstein-Barr virus viral capsid antigen; EIA, enzyme immunoassay.