Table 2.
Etiologic studies.
| Etiologic studies | Results |
| Antistreptolysins | Normal |
| Paul Bunnel reaction | Negative |
| Epstein Barr Virus IgM/ Epstein Barr Virus IgG Blood Epstein Barr Virus PCR | Negative Positive Negative |
| Blood CMV PCR CMV IgM CMV IgG | Negative Negative Positive |
| HBsAg, AntiHBc | Negative |
| Anti HAV IgM Total anti HAV | Negative Positive |
| Anti HCV IgG | Negative |
| First: HSV-2 IgM/IgG Second: Pharynx HSV-2 PCR Liver tissue HSV-2 PCR Blood HSV-2 PCR Pleural effusion HSV-2 PCR | Inconclusive (0.98)/Inconclusive (1.0) Positive Positive Positive Positive |
| HSV-1 IgM/IgG | Negative/Negative |
| VZV IgG | Positive |
| IgA/IgM/IgG (mg/dL) | Normal (277/1320/272 mg/dL, respectively) |
| ANA, AMA-M2, M2–3E, Sp100, PML, gp210, LKM1, LC-1, SLA/LP, Ro-52 | Negative |
| Bone marrow flow cytometry Mielogram | Negative for lymphoproliferative disorders Erythroid hypoplasia |
| Ferritin Seric Fe Saturation coefficient | >40000 ng/mL 16 ug/dL 17% |
| HIV | Non-reactive |
| VDRL | Non-reactive |
| B-hCG | Negative |
| Blood PCR Parvovirus B19 | Negative |
AMA-M2 = antimitochondrial antibodies, M2 subtype, ANA = antinuclear antibody, B-hCG = human chorionic gonadotropin beta-subunit, CMV = cytomegalovirus, HAV = hepatitis A virus, HCV = hepatitis C virus, HIV = human immunodeficiency viruses, HSV = herpes simplex virus, LC-1 = anti-liver cytosol antibody, LKM1 = anti-liver-kidney microsomal-1, M2-E3 = AntiM2-E3 Elisa IgG, PCR = polymerase chain reaction, PML = promyelocytic leukemia nuclear body proteins, SLA/LP = antibodies against soluble liver antigen/liver-pancreas, VDRL = venereal disease research laboratory, VZV = varicella-zoster virus.