12 results
Thyroid Function Tests (TFTs) and Interpretation

 • TSH, Free T4, Free T3
 • T3 Uptake
 •
Thyroid Function Tests ... Thyroid #Function #Tests ... endocrinology #diagnosis #laboratory ... #patterns #differential
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Hemolysis - Differential ... Hypophostphatemia Laboratory ... Tests: - Haptoglobin ... #Hemolysis #Differential
Allopecia - Differential Diagnosis Framework for Hair Loss

Localized / Focal Hair Loss Pattern:
 • Scarring Alopecia:
Allopecia - Differential ... disease • Pull test ... fungi Initial Laboratory ... Tests: • TSH ... • RPR • Laboratory
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
pathognomonic laboratory ... tests in Behcet ... Positive pathergy test ... is a skin prick test ... Behcet disease) Differential
Major neurocognitive disorders (MNCD): Diagnosis and workup 

1) Clinical diagnosis Cognitive impairment + loss of autonomy
2)
deficiency, ... laboratory ... tests + imaging ... MNCD #Dementia #Differential
Cauda Equina Syndrome Overview

Cauda Equina Syndrome:
 • Prevalence: 1:33,000-100,000 ppl/yr
 • Incidence: 1.5-3.4 million ppl/yr
 •
constipation Differential ... • Provocative Tests ... absent anal wink test ... around the anus Laboratory ... Equina #syndrome #differential
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
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
TTP - Laboratory ... value is low, tests ... indirect antiglobulin tests ... WBC count and differential
Causes of Lactate Elevation, Lactic Acidosis - Differential Diagnosis

The most common causes of hyperlactatemia are usually:
Lactic Acidosis - Differential ... - assess other laboratory ... or diagnostic tests ... Acidosis #Elevation #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
the use of this test ... in BAL does not differentiate ... FalsePositives #Laboratory