9 results
Pulmonary Function Tests (PFTs) - Interpretation Algorithm
 • Normal
 • Pulmonary Hypertension, Anemia, Carboxyhemoglobinemia
 • Chest
Pulmonary Function Tests ... (PFTs) - Interpretation ... #Pulmonary #FunctionTests ... #PFTs #Interpretation
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function Tests ... (TFTs) and Interpretation ... #TFTs #Interpretation ... endocrinology #diagnosis #laboratory ... #patterns #differential
Chronic Diarrhea - Workup
Osmotic:
 • Consider food diary and trial avoiding certain foods or meds, Consider
hydrogen breath test ... A/P, Consider testing ... for fecal elastase ... • Colonoscopy, Fecal ... Workup #diagnosis #differential
Causes of Inaccurate Fecal Occult Blood Test Results 

False Positive gFOBT:
Ingestion of nonhuman heme (eg, meat
of Inaccurate Fecal ... Occult Blood Test ... #OccultBlood #Testing ... #Laboratory #FalsePositive ... FalseNegative #Diagnosis #Differential
Helicobacter Pylori (H. pylori) Infection - Diagnosis and Management - GrepMed Handbook
Presentation: Dyspepsia / Peptic Ulcer
unknown (presumed fecal-oral ... Ag, Urea Breath Testing ... hold 2w before testing ... (IgG) - cannot differentiate ... Ag, Urea Breath Test
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... Localized / Focal ... disease • Pull test ... fungi Initial Laboratory ... Tests: • TSH
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
adults • Blood tests ... Pulmonary function tests ... Bronchoscopy Laboratory ... Sweat chloride test ... Bronchiectasis #pulmonary #differential
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 ... the use of this test ... in BAL does not differentiate ... Galactomannan #Fungal #Testing ... FalsePositives #Laboratory
Pragmatic diagnostic algorithm for hypokalemia. 
***Typical presentations: 
 • Vomiting: urine Na/Cl > 1.6, low urine
confirmed via genetic testing ... in most cases; interpretation ... dependent upon local laboratory ... hypokalemia #diagnosis #differential