109 results
What is Fecal Occult Blood Testing (FOBT)
 • Screening for colorectal cancer in average risk population
Blood Testing (FOBT ... immunochemical test ... of time) Why FOBT ... OccultBlood #Testing #FOBT ... #Guaiac #FalsePositives
Sensitivity Specificity False-Positive False-Negative Contingency Table / confusion matrix

Sensitivity refers to the test's ability to correctly
Specificity of a test ... disease, who will test ... #Specificity #FalsePositive
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
Fecal Occult Blood Test ... False Positive gFOBT ... medication #Guaiac #FOBT ... Testing #Laboratory #FalsePositive
Syncope Diagnostic Testing and Evaluation: Cost Effectiveness
Frequency obtained - Abnormal findings - Helped determine etiology of
Cost - Cost per test ... etiology of syncope Tests ... Cardiac stress test ... Syncope #diagnosis #workup
Evaluating a Patient with Presumed Cushing Syndrome

#Cushings #Syndrome #Disease #Algorithm #Workup #Dexamethasone #Suppression #Test #diagnosis
Disease #Algorithm #Workup ... #Suppression #Test
Diabetic Foot Guidelines: Test patients w diabetes for peripheral neuropathy using the Semmes-Weinstein test
JAMA. 2017;318(14):1387-1388. doi:10.1001/jama.2017.11700

#Diagnosis
Diabetic Foot Guidelines ... : Test patients ... Semmes-Weinstein test
Commonly Used Diagnostic Tests for Celiac Disease

Tissue transglutaminase (tTG) IgA antibodies
 - Most reliable noninvasive test
Used Diagnostic Tests ... reliable noninvasive test ... first-level screening test ... celiac disease - Test ... #Diagnosis #Workup
Diabetic Foot Ulcer - Peripheral Arterial Disease Assessment Algorithm

Early Revascularization vs Conservative Care

Workup:
 • Arterial doppler
Diabetic Foot Ulcer ... Conservative Care Workup ... #Diabetic #Foot
Urine Drug Screens - Common drugs that may cause false positive tests 

Amphetamines:
Bupropion, Labetalol, Methylphenidate, Phenylephrine,
false positive tests ... Toxicology #Diagnosis #FalsePositive
Gastrointestinal Evaluation of Iron Deficiency Anemia
In patients with anemia, diagnose iron deficiency if:
 • Ferritin <
Additional laboratory tests ... chronic kidney tests ... Test for celiac ... Gastrointestinal #Evaluation #workup