Table 1

Serological and antimicrobial testing

SerumCSF
SyphilisTPPAPositiveTPPAPositive
CMIAPositiveVDRLPositive (1:8)
RPR1:32Syphilis PCRNegative
OtherACE53 nM/mL/m
(20-70)
ACE2 U/L (≤2 U/L)
ANA1: 160, speckledCryptococcal Antigen and PCRNegative
ENANegativeZiehl-Neelsen stain (acid-fast bacilli)Negative
ANCA (MPO, PR3)<1 IU/mLHerpes simplex virus 1/2 PCRNegative
Rheumatoid Factor<15 IU/mLEnterovirus PCRNegative
CCP<1 U/mLHuman Herpesvirus 6 PCRNegative
CryoglobulinsNegativeCytomegalovirus PCRNegative
HIVNon-reactiveVaricella zoster virus PCRNegative
Hepatitis B Surface AbHuman parechovirus PCRNegative
Hepatitis B Surface AgNegativeGram stain, bacterial cultureNegative
Hepatitis B Core AbNegativeFlow cytometryPolyclonal B cell population
Hepatitis C Core AbNegativeCytologyNegative for Malignancy
GQ1bNegative
  • Ab, antibody; Ag, antigen; ANA, antinuclear antibody; ANCA, antineutrophilic cytoplasmic antibody; CCP, anticitrullinated peptide antibody; CMIA, chemiluminescent microagglutination immunoassay; CSF, cerebrospinal fluid; MPO, myeloperoxidase; NR, normal range; PR3, proteinase 3; RPR, rapid plasma reagin; TPPA, treponema pallidum particle agglutination assay; VDRL, venereal disease research laboratory test.