106 results
D-dimer
Plasma D-dimer is a product of clot breakdown, released upon degradation of polymerized, crosslinked fibrin. Elevated
age, which can cause ... a ↓ specificity ... (i.e. more false ... adjusted d-dimer testing ... pathophysiology #hematology #differential
1,3 Beta-D-Glucan and Galactomannan - Pathogens, and Testing Characteristics
1,3 ß-D-glucan:
 • Most fungi excluding mucor and
Pathogens, and Testing ... and pneumocystis False ... Glucan-containing gauzes ... other fungi • False ... #Sensitivity #Specificity
Algorithm for the diagnosis of chronic diarrhea.
It is usually impractical to test and treat the many
many possible causes ... In most cases, it ... diarrhea before testing ... reduce unnecessary testing ... the much smaller differential
Causes of False Elevation and Reduction in HbA1c

== False Elevation ==
Decreased RBC turnover 
• Iron, B-12,
Causes of False ... in HbA1c == False ... Transfusions == False ... Transfusions #False ... Diagnosis #DM2 #Differential
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
Medications that Can Cause ... False Positives ... medications can cause ... Protonix), may cause ... #drug #tests #differential
Clinical Presentation and Diagnosis of Common Causes of Vaginitis

#Vaginitis #Differential #Diagnosis #Comparison #Table #Testing #Gynecology #OBGyn
Diagnosis of Common Causes ... #Vaginitis #Differential ... Comparison #Table #Testing
1,3-Beta-D-Glucan and Galactomannan Testing Sensitivity Specificity and False Positives
1,3-Beta-D-Glucan
 • Cell wall component of many fungi
Galactomannan Testing ... Sensitivity Specificity ... 96% • Higher specificity ... in BAL does not differentiate ... Galactomannan #Fungal #Testing
Reflex Testing - Causes of Hyporeflexia and Hyperreflexia
Focal Hyporeflexia: 
 • Radiculopathy, Mononeuropathy, Polyneuropathy, Acute stroke,
Reflex Testing - ... Causes of Hyporeflexia ... Deep coma (any cause ... Hyperreflexia #Testing ... #Causes #differential
Causes of Proteinuria - Differential Diagnosis Algorithm
Persistent Proteinuria >150mg/d protein present on repeat testing including overnight
Causes of Proteinuria ... - Differential ... present on repeat testing ... including overnight testing ... Proteinuria #Nephrology #Differential
Fungal Biomarkers: Beta-D-Glucan and Aspergillus Galactomannan
Beta-D-Glucan:
 • Polysaccharide cell wall component of many fungi
 • Pathogens:
Sensitivity & Specificity ... breakthrough IFI in HM • False ... BAL GM does not differentiate ... recipients, CGD pts • False ... Frozen ice-pops (in setting