Candida detection system (CAND-TEC) to differentiate between Candida albicans colonization and disease

Area of Science:

• Medical Mycology
• Clinical Diagnostics
• Infectious Diseases

Background:

• Systemic candidiasis, often caused by Candida albicans, presents a diagnostic challenge.
• Early detection of disseminated candidiasis is crucial for effective treatment and improved patient outcomes.

Purpose of the Study:

• To evaluate the diagnostic utility of the Candida Detection System (CAND-TEC) for detecting circulating Candida protein antigens in patients with suspected candidiasis.
• To determine the sensitivity and specificity of the CAND-TEC assay in identifying disseminated Candida albicans infections.

Main Methods:

• Serum specimens from 24 patients with Candida albicans infection were tested using the CAND-TEC latex agglutination assay.
• Patient medical records were reviewed for clinical data, predisposing factors, and outcomes.
• Antigen titers were correlated with clinical diagnoses of colonization or disseminated candidiasis.

Main Results:

• A CAND-TEC titer of 1:8 or greater was highly indicative of disseminated candidiasis, with a specificity of 98%.
• The system demonstrated a sensitivity of 71% (or 83% with adjusted criteria) for detecting disseminated infections.
• Titer results of 1:4 were suggestive but not uniformly diagnostic of deep-seated candidal infections.

Conclusions:

• The CAND-TEC latex agglutination assay is a valuable tool for the rapid, noninvasive laboratory diagnosis of systemic candidiasis.
• A Candida antigen titer of 1:8 or higher is a strong indicator of disseminated disease.
• Recovery of Candida albicans from multiple body sites may also predict disseminated infection.