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Introduction Bronchoalveolar lavage (BAL) is a diagnostic procedure used to collect specimens from the lower respiratory tract, particularly from the alveolar spaces. It is performed by instilling sterile saline into a segment of the lung via a bronchoscope and then aspirating it back. Gram staining …
Introduction Direct microscopic examination is one of the most rapid and inexpensive diagnostic methods for detecting fungal elements in clinical specimens. Potassium hydroxide (KOH) smear is a routine technique in mycology that helps visualize fungal structures such as hyphae, yeast cells, and sclerotic bodies directly …
Introduction Candidemia and invasive Candida infections are among the most common fungal diseases in hospitalized and immunocompromised patients. Traditional diagnosis by blood culture is often slow and has limited sensitivity. Candida antigen testing provides a rapid, non-culture-based method for detecting circulating fungal components in blood …
Introduction Histoplasma capsulatum is a dimorphic fungus responsible for histoplasmosis, an endemic mycosis prevalent in parts of North and Central America, Africa, and Asia. In immunocompromised patients, especially those with HIV/AIDS, cancer, or organ transplants, histoplasmosis can be severe and disseminated. Histoplasma antigen testing provides …
Introduction Mold infections caused by species such as Aspergillus, Fusarium, Scedosporium, and Mucorales are increasingly common, especially in immunocompromised and oncology patients. Effective treatment requires accurate antifungal susceptibility testing (AFST). The E-test (Epsilometer test) is a practical method used in clinical microbiology to determine the …
Introduction Aspergillus species, particularly Aspergillus fumigatus, are major causes of invasive aspergillosis (IA), especially in immunocompromised patients, such as those with hematological malignancies, transplant recipients, or those with prolonged neutropenia. Diagnosis of IA is often challenging because clinical symptoms and radiological findings are nonspecific. Aspergillus …
Introduction Yeast infections, particularly caused by Candida and Cryptococcus species, are a major clinical challenge, especially in immunocompromised patients. Rapid and accurate determination of antifungal susceptibility is crucial for guiding therapy. The E-test (Epsilometer test) is a widely used, simple, and reliable method for determining …
Introduction of Comparison: Multiplex PCR vs Blood Culture vs Biomarker Tests The diagnosis of invasive fungal infections remains a major clinical challenge, especially in high-risk patients such as those with cancer, transplants, or critical illness. Conventional blood culture is still the gold standard but suffers …