48 results
Methylmalonic Acid and Homocysteine Levels in Vitamin B12 and Folate Deficiency
 • B12 Deficiency: MMA elevated,
and Homocysteine Levels ... VitaminB12 #diagnosis #hematology
Autoimmune Myositis
Necrotizing myopathy is associated with higher CK levels, greater level of muscle weakness, less systemic
with higher CK levels ... , greater level ... Myositis #diagnosis #rheumatology
Hydroxychloroquine Serum Measurement in SLE
 • Terminal elimination half-life = 40 days ([HCQI reflects long-term intake)
Insufficient blood levels ... Measurement #SLE #rheumatology ... #pharmacology #levels
Diagnosing Vitamin B12 and/or Folate Deficiency

It turns out that simply measuring serum levels of B12 or
measuring serum levels ... low normal B12 levels ... elevated homocysteine level ... Serum folate levels ... Diagnosis #Nutrition #Hematology
Seronegative Inflammatory Arthritis - Differential Diagnosis
 • Seronegative Rheumatoid Arthritis 
 • Infectious Arthritis: Viral, Bacterial,
Undifferentiated UCSD ... Differential #Diagnosis #rheumatology
Polycythemia - Differential Diagnosis Algorithm
Polycythemia itself isn’t a diagnosis. Like many things, it is a condition
Check a level. ... Better call hematology ... ramping up EPO levels ... mutations, EPO levels ... Algorithm #workup #hematology
Common Variable Immunodeficiency (CVID)

What?
CVID: Immunodeficiency disorder with hypogammaglobulinemia -> increased infection risk secondary to impaired B-cell
Low serum IgG level ... apart (unless levels ... Monitor trough levels ... to ensure serum levels ... hypogammaglobulinemia #immunology #hematology
VEXAS (Vacuoles, E1 enzyme, X-linked, Autoinflammatory, Somatic) Syndrome
Clinical Syndrome:
 • Common Clinical Features: alveolitis, ear and
disease, recurrent fevers ... vasculitis • Hematologic ... criteria for 1) hematologic ... Autoinflammatory #Somatic #rheumatology
Diagnosis of Cryoglobulinemia Vasculitis

1) Presence of cryoglobulin 
Circulating immunoglobulins that precipitate with cold temperature and dissolve
Variable levels ... Vasculitis #Diagnosis #Rheumatology
Renal involvement in 35% of mixed cryoglobulinemia vasculitis 
Associated with : 
 • Absence of skin
decr of C3 and C4 levels ... Vasculitis #Management #Rheumatology