Standardization of Antigenemia and qPCR Cut-off Values in Whole Blood for the Detection of Cytomegalovirus Disease in HIV Patients

Rev Soc Bras Med Trop. 2019 Jun 27:52:e20180457. doi: 10.1590/0037-8682-0457-2018.

Abstract

Introduction: We defined the cut-off values of the antigenemia and cytomegalovirus (CMV) DNA tests in HIV/AIDS patients to identify CMV disease.

Methods: A total of 97 samples from 68 patients with and without CMV disease were analyzed by viral DNA detection and antigenemia assay.

Results: Qualitative and quantitative results significantly differed between assays. The cut-off values for the antigenemia and qPCR assays were 1.5 positive cells/200,000 leukocytes and 3.715 log/mL, respectively.

Conclusions: Antigenemia and qPCR are suitable for monitoring CMV disease in HIV patients, however, the threshold values should be determined within the centers where the patients are monitored.

MeSH terms

  • AIDS-Related Opportunistic Infections / blood
  • AIDS-Related Opportunistic Infections / diagnosis*
  • Antigens, Viral / blood
  • Brazil / epidemiology
  • Cytomegalovirus / genetics
  • Cytomegalovirus / isolation & purification*
  • Cytomegalovirus Infections / blood
  • Cytomegalovirus Infections / diagnosis*
  • DNA, Viral / analysis*
  • DNA, Viral / blood
  • Humans
  • Predictive Value of Tests
  • Prospective Studies
  • ROC Curve
  • Real-Time Polymerase Chain Reaction
  • Sensitivity and Specificity
  • Viral Load

Substances

  • Antigens, Viral
  • DNA, Viral