186 results
Celiac Disease Testing Algorithm
INDICATIONS FOR TESTING:  Nonspecific symptoms (iron-deficiency anemia, failure to thrive, fever, skin
Immunoglobulin A • tTG IgA ... • tTG IgG and ... DGP IgGa • EMA ... IgG by IFA • DGP ... IgA • HLA testing
Cryoglobulinemia Classification Types

Type 1: Monoclonal IgM (rarely IgG/lgA)
 • Raynaud phenomenon, Digital ulcers/gangrene, Livedo reticularis, Hyperviscosity
1: Monoclonal IgM ... (rarely IgG/lgA ... and polyclonal IgG ... and polyclonal IgG ... and polyclonal IgG
Autoimmune Hemolytic Anemia (AIHA) Pathophysiology - Warm vs Cold AIHA
Warm AIHA:
 - 70%; IgG mediated
 -
AIHA: - 70%; IgG ... mediated - DAT: IgG ... AIHA: - 20%; IgM ... mediated - DAT: IgG
You’ll notice there is an IgM and an IgG core antibody. The presence of IgM anti-HBc
and an IgG core ... IgM anti-HBc is ... The presence of IgG ... infected with HBV, IgG ... and IgG anti-HBc
Expected DAT Results in Autoimmune Hemolysis
DAT Negative Hemolysis
 • DAT Poly ( - ), IgG (
DAT Poly ( - ), IgG ... DAT Poly ( + ), IgG ... DAT Poly ( + ), IgG ... Poly ( +/- ), IgG ... DAT Poly ( + ), IgG
IGG-4 RELATED DISEASE

WHAT?
 • A chronic, immune-mediated fibroinflammatory disease with tumefactive infiltration of IgG4+ plasma cells
IGG-4 RELATED DISEASE ... infiltration of IgG4 ... lesions - IgG4 ... Biliary Tract: IgG4 ... -2.5 g/day #IGG
Antiphospholipid Syndrome (APLS) Testing - Hypercoagulable Workup Algorithm
INDICATIONS FOR TESTING:
 • Vascular thrombosis
Cardiolipin Antibodies, IgG ... 1 Antibodies, IgG ... Prothrombin Antibodies, IgG ... Phosphatidylserine Antibodies, IgG ... Prothrombin Antibody, IgGa
Eosinophilic angiocentric fibrosis: IgG4-related disease of the upper aerodigestive tract. Distinctive concentric (onion-skin) perivascular fibrosis and
angiocentric fibrosis: IgG4 ... Usually >50 IgG4 ... plasma cells/HPF, IgG4 ... :IgG >40%
Hypersensitivity Types and Their Mechanisms
Type I - lgE - Soluble antigen
 - Allergen-specific lgE antibodies bind
allergies Type II - IgG ... antigen - IgG ... or IgM antibody ... IgG can also mediate ... Type Ill - IgG and
Subtypes of Serum Proteins

Pre-albumin (Transthyretin)
Albumin
Globulins
 • Alpha-1: Alpha-1 antitrypsin, Serum amyloid A, Ceruloplasmin, Corticosteroid-binding globulin (Transcortin),
Transferrin • Gamma: IgM ... , IgG, IgA, RF,