Diagnosis of Infectious Disease

To determine the infectious agent, manage the infection, and prevent the spread of infection.

Diagnostic tests aim to answer questions such as 'Am I infected?', 'What am I infected with?', 'Can I be treated?', and others.

Samples such as blood, saliva, urine, pus, vomit, feces, tissue biopsies, and mucosal swabs can be used for laboratory tests.

<p>To avoid getting wrong results, it is essential to minimize specimen contamination during collection.</p> Signup and view all the answers

<p>Enough tissue is required to ensure that both histopathologic and microbiologic examinations can be performed, which is essential for accurate diagnosis and treatment of infections.</p> Signup and view all the answers

<p>Skin and mucous membranes have a large and diverse indigenous flora, which must be considered during specimen collection and diagnosis.</p> Signup and view all the answers

<p>It is recommended to collect specimens before administering antibiotics to ensure that the antibiotic treatment does not interfere with the diagnosis and identification of the pathogen.</p> Signup and view all the answers

<p>To determine if the treatment is effective and the infection is improving or not.</p> Signup and view all the answers

<p>The primary goal of direct diagnosis is to detect specific microbial antigens using techniques such as microscopy, staining, immunofluorescence, and other immunoassays.</p> Signup and view all the answers

<p>Selective media contain inhibitory substances that permit the isolation of specific types of microorganisms, allowing for the identification and characterization of pathogens.</p> Signup and view all the answers

<p>MALDI-TOF is a technique used for the identification of microbial isolates, allowing for rapid and accurate identification of microorganisms.</p> Signup and view all the answers

<p>Determining antimicrobial susceptibility is essential to identify the most effective treatment options for infected patients.</p> Signup and view all the answers

<p>Selective media are used to isolate specific types of microorganisms by containing inhibitory substances that permit the growth of only certain types of microorganisms.</p> Signup and view all the answers

<p>A high or rising titer of specific antibodies may suggest or confirm a diagnosis.</p> Signup and view all the answers

<p>Chromogenic agar contain substances that permit the isolation of specific types of microorganisms based on colour changes.</p> Signup and view all the answers

<p>Immunofluorescence staining is used to detect specific microbial antigens in nasopharyngeal secretions.</p> Signup and view all the answers

<p>Gram positive bacteria appear purple, while Gram negative bacteria appear pink.</p> Signup and view all the answers

<p>MALDI-TOF is used for confirmation of the identity of microorganisms isolated from a sample.</p> Signup and view all the answers

<p>controlling the disease they cause</p> Signup and view all the answers

<p>to detect specific antibodies in the blood</p> Signup and view all the answers

<p>IgM followed by IgG</p> Signup and view all the answers

<p>reduced analytical error</p> Signup and view all the answers

<p>rapid diagnosis of common infectious diseases</p> Signup and view all the answers

<p>reduced time to diagnosis</p> Signup and view all the answers

<p>Measles IgM and IgG</p> Signup and view all the answers

<p>Charcoal swab</p> Signup and view all the answers

<p>Streptococcus pyrogenes</p> Signup and view all the answers

<p>Penicillin or amoxicillin</p> Signup and view all the answers

<p>The patient is immune to measles.</p> Signup and view all the answers

<p>Blood agar</p> Signup and view all the answers