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Table 2 Results of infectious disease workup
| Source | Test result | ||||||
|---|---|---|---|---|---|---|---|
| Blood | Cultures: no growth (bacterial/fungal) | Negative for HIV 1/2 and HIV p24 Ag | Nonreactive for Lyme antibody and Treponema pallidum immunoassay | Negative for Coccidioides IgM and IgG. Negative for Histoplasma Ag | Viral hepatitis panel (A, B, C) significant only for hepatitis B core Ab | EBV serology consistent with seropositive statusa | CMV serology consistent with seronegative status |
| Urine | Urinalysis significant only for trace proteinuria | Negative for Legionella Ag | Negative for Streptococcus pneumoniae Ag | ||||
| Nasopharyngeal swab | Negative for Group A Streptococcus (direct antigen test) | Negative for influenza A, B, RSV (rt-PCR) | Negative for MSSA and MRSA | ||||
| Cerebrospinal fluid (CSF) | CSF showed 14 nucleated cells/mm3 (normal 0–5/mm3) consisting of 84% polymorphonuclear leukocytes, 9% lymphocytes, and 7% monocytes; 44 mg/dL glucose (normal 41–70 mg/dL); 70 mg/dL protein (normal 15–45 mg/dL) | Cryptococcus neoformans Ag and C. gattii Ag | Nonreactive for West Nile virus IgG/IgM | Negative for HSV 1, 2 and enterovirus (PCR) | Negative for acid fast bacilli, no growth occurred during fungal and mycobacterial culture | ||
| Stool | Negative for Clostridium difficile toxin B (PCR) | ||||||
| Other | PPD skin test 0-mm induration | Quantiferon Gold tuberculosis test indeterminate | |||||
