6 results
Helicobacter Pylori Testing  Methods - Sensitivity and Specificity

Serology - 85% - 79% - Does not
Helicobacter Pylori Testing ... Urea breath test ... at UCSF due to cost ... #Laboratory #Diagnosis ... #Accuracy
Primary Adrenal Insufficiency:
 • ACTH stimulation test - Synthetic ACTH does not stimulate cortisol secretion because
ACTH stimulation test ... cases in which injury ... - Serum tests that ... Insufficiency #Evaluation #laboratory ... #diagnosis #testing
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Fecal Occult Blood Test ... #OccultBlood #Testing ... #Laboratory #FalsePositive ... FalseNegative #Diagnosis ... #Differential #Accuracy
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
bronchial wall injury ... parenchyma Diagnosis ... Bronchoscopy Laboratory ... Sweat chloride test ... #differential #diagnosis
USMLE Epidemiology and Biostatistics Summary
Meta-Analysis: pools data from several studies (greater power), limited by quality/bias of
confounding and inability ... disease who test ... probability of getting ... error Validity (“accuracy ... #calculations #diagnosis
Blood Product Transfusions One Pager Summary
Type and screen - determines blood type and detects in recipient
indirect Coombs test ... Crossmatch - involves testing ... Related Acute Lung Injury ... false negatives on testing ... #Transfusions #diagnosis