13 results
Expected DAT Results in Autoimmune Hemolysis
DAT Negative Hemolysis
 • DAT Poly ( - ), IgG (
DAT Results in Autoimmune ... , C3d ( +/- ) Paroxysmal ... #antiglobulin #test ... #DAT #Autoimmune ... #Hemolysis #hematology
Autoimmune Hemolytic Anemia (AIHA) - Differential Diagnosis Table

Warm AIHA (48-70%)
Cold AHA (16-32%)
 • Donath-Landsteiner HA (paroxysmal
Autoimmune Hemolytic ... Anemia (AIHA) - Differential ... Donath-Landsteiner HA (paroxysmal ... #Hemolytic #Anemia ... Diagnosis #Table #hematology
Diagnostic Framework for Hemolysis - Intravascular vs Extravascular Causes
Intravascular Hemolysis:
 • Mechanical Trauma (Microangiopathic hemolytic anemia):
Transfusion reaction, Paroxysmal ... Immune-mediated: - Autoimmune ... idiopathic) - Autoimmune ... Extravascular #Causes #differential ... #diagnosis #hematology
Pancytopenia - Differential Diagnosis

Congenital Diseases:
• GATA2 deficiency
• Fanconi’s anemia
• Wiskott-Aldrich syndrome
• Ribosomopathy or telomeropathy

Cancer:
• Leukemia
• Lymphoma

Inflammatory
Pancytopenia - Differential ... Inflammatory and Autoimmune ... erythematosus • HLH • Paroxysmal ... Antibody-mediated hemolysis ... #Diagnosis #Hematology
Hepatocellular Liver Injury - Differential Diagnosis Framework:
Liver Injury → liver test abnormalities without evidence of liver
- Differential ... → liver test abnormalities ... Other: NAFLD, Autoimmune ... Diagnosis #hepatology ... #algorithm #Transaminitis
Elevated Liver Function Tests (LFTs) - Differential Diagnosis Framework
Mild (<100-500): 
 • NAFLD
 • Cirrhosis
 •
Liver Function Tests ... (LFTs) - Differential ... Drug-induced liver injury ... #Diagnosis #hepatology ... #transaminitis
Liver Function Test (LFTs) Elevation
AST - Cardiac and skeletal muscle, kidney, brain
ALT - More specific for
Liver Function Test ... ) vs Indirect (Hemolytic ... Hepatocellular injury ... LFTs #Elevation #Transaminitis ... #diagnosis #hepatology
Patterns of Liver Injury
Transaminase Levels:
  > 50x normal - Ischemic Hepatitis
  > 20x normal
Patterns of Liver Injury ... 2-5x normal - Hemolysis ... #hepatology #LFTs ... #transaminitis ... #differential #diagnosis
Hemolysis - Differential Diagnosis Framework

1) Environment
  - Fragmentation
  - MAHA: TTP, HUS, DIC, HELLP
Hemolysis - Differential ... Membrane): - Autoimmune ... Laboratory Tests ... #Differential # ... Diagnosis #hematology
Cold Agglutinin Disease

3 Types of Cold Sensitive Antibodies:
  1. Cold Agglutinins (CAD)
  2. Donath-Landsteiner
Viral infection, autoimmune ... younger pts) Differential ... macroglobulinemia Paroxysmal ... • Diagnostic Test ... #anemia #hematology