Table 3.

Laboratory investigations performed 2 weeks after admission

Nasopharyngeal swab	SARS-CoV-2 RNA PCR (N gene, E gene, RDRP/ORF1ab): negative (not detected)
CSF appearance	Clear and colourless
CSF cytology and microbiology	WBC: <5 cells/cmm RBC: 50 cells/cmm Gram stain: No organism is seen Bacterial, fungal and AFB cultures: no growth
CSF virology	SARS-CoV-2 RNA PCR (N gene, E gene, RDRP/ORF1ab): negative (not detected) Herpes simplex virus I & II DNA PCR: negative Varicella zoster virus DNA PCR: negative Human herpes virus 6 DNA PCR: negative Human herpes virus 7 DNA PCR: negative Enterovirus RNA PCR: negative
CSF analysis	CSF protein: 55 mg/dL CSF glucose: 67 mg/dL CSF chloride: 119 mg/dL
D-dimer	0.65 µg/mL FEU
Bilirubin	Total: 1.1 mg/dL

AFB, acid-fast bacillus; CSF, cerebrospinal fluid; FEU, fibrinogen equivalent unit; RBC, red blood cell; WBC, white blood cell.