13 results
Expected DAT Results in Autoimmune Hemolysis
DAT Negative Hemolysis
 • DAT Poly ( - ), IgG (
, C3d ( +/- ) Cold ... agglutinin disease ... ) Paroxysmal cold ... #antiglobulin #test ... #hematology #diagnosis
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Diagnosis: • hemolytic ... Hemoglobinuria (PCH ... Test: Donath-Landsteiner ... test #cold # ... #hematology #diagnosis
Hemolytic Anemia - Differential Diagnosis Algorithm
 • Sickle cells - Consider sickle cell disease (diverse genotypes):
- Differential Diagnosis ... Agglutination - Cold ... #Differential #Diagnosis ... #Algorithm #workup ... #hematology #testing
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Diagnosis Framework ... Autoimmune: Warm AIHA, Cold ... Drug-associated, PCH ... Laboratory Tests ... #hematology
Cold Urticaria
Prevalence - 0.05% in the population
Disease onset - Mostly 2nd to 4th decades of life
Causes
Disorientation, vertigo Diagnostic ... test, TempTest ... #Urticaria #diagnosis ... #rheumatology # ... comparison #table
Causes of Thrombocytopenia and Platelet Disorders - Differential Diagnosis and Workup
History:
 - Prior platelet count, family
- Differential Diagnosis ... and Workup History ... practices that could ... #Causes #Workup ... #hematology
TTP - Laboratory Evaluation for Thrombotic Thrombocytopenic Purpura

Activity of von Willebrand factor-cleaving protease activity - A
activity is the diagnostic ... hallmark for the disease ... value is low, tests ... indirect antiglobulin tests ... #Workup #Hematology
Rheumatology Workup - Laboratories Studies in Rheumatic Diseases

• Septic arthritis - Gram stain and culture of
Rheumatology Workup ... should be obtained ... (to support a diagnosis ... #diagnosis #testing ... #Rheumatology
Behçet's Syndrome
Systemic disease associated with inflammation of multiple organs, small-vessel vasculitis and large-vessel vasculopathy
Epidemiology:
 • Young
matter, spinal cord ... Positive pathergy test ... is a skin prick test ... #management #signs ... #symptoms #rheumatology
Paraproteinemias

Entities That Can Feature A Monoclonal Protein/M Component:
• MM
• WM
• MGUS
• MGCS
• MGRS
• Splenic Marginal Zone
• Heavy Chain disease ... • Coombs (-) hemolytic ... anemia due to cold ... Paraproteinemias #Hematology ... #Differential #Diagnosis