Why do rheumatologists do a "blood routine" test?

Blood routine is one of the must-see items for patients with rheumatic immune diseases, especially those who are newly diagnosed and treated

So what do the items in the blood routine mean?

The word "routine" is often translated as Routing, so the blood routine is often abbreviated to blood RT or Rt, including red blood cell count, white blood cell count, white blood cell classification count, hemoglobin number, platelet count and so on

Leukocyte abnormalities

Decreased white blood cell count

Commonly found in systemic lupus erythematosus, Sjogren's syndrome, mixed connective tissue disease, autoimmune hepatitis, and can also be seen in rheumatoid arthritis, also known as Felty syndrome

Increased white blood cell count

In almost every adult still patient, 75% of patients have leukocyte ≥ 15×109/L, and some patients even have naïve cells and present leukemia-like reactions, and may have high fever, rash, liver, spleen, lymphadenopathy, etc

Other rheumatisms that can cause mild increase in white blood cells are: rheumatic fever, polymyositis/dermatomyositis, systemic vasculitis including henoch-schönlein purpura, aortic arteritis, polyarteritis nodosum, Behcet's disease, allergic granulomatous vasculitis, etc

lymphocyte

Abbreviation: L% or LY%: increase is more common in viral infections

Neutrophils

Abbreviation: N% or NE%

Eosinophils

Abbreviation: E% or EO%

Eosinophilia: common in allergic diseases (bronchial asthma, urticaria, angioedema, food allergies, etc.

Eosinophilia: commonly seen on long-term treatment with adrenocorticosteroids, and in the early stages

Basophils

Abbreviation: B% or BA%.

Basophilia: common in chronic myelogenous leukemia, basophilic leukemia, myelofibrosis, and certain metastatic cancers

Red blood cell count

Increased red blood cell count

It can be seen in polycythemia vera, pulmonary heart disease, emphysema, and high altitude hypoxia

Decreased red blood cell count

It is common in systemic lupus erythematosus, with hemolytic anemia as the first symptom of systemic lupus erythematosus in many cases, others also seen in rheumatoid arthritis, Sjogren's syndrome, aortic arteritis, systemic sclerosis, polymyositis/dermatomyositis

Hemoglobin (also known as hemoglobin, Hb, or HGB)

Increased hemoglobin

Physiological increase, seen in highland dwellers, fetuses and newborns, strenuous activities, fear, cold water baths, etc.

Decreased hemoglobin

Physiologically reduced, the elderly due to the gradual decrease in bone marrow hematopoietic function, can lead to a decrease in the content of red blood cells and hemoglobin; Pathological decrease, bone marrow hematopoietic failure, such as aplastic anemia, myelofibrosis associated with anemia such as iron deficiency anemia, folic acid and vitamin B12 deficiency caused by megaloblastic anemia

Platelet count

increased platelet count (>300×109/L)

Common in rheumatoid arthritis, ankylosing spondylitis, reactive arthritis, etc
.

decreased platelet count (<100×109/L)

▶ Production disorders: seen in aplastic anemia, acute leukemia, acute radiation sickness
.

▶ Hyperlamination: seen in primary thrombocytopenic purpura and hypersplenism
.

▶ Hyperpendition: seen in diffuse intravascular coagulation (DIC
).

▶ Familial thrombocytopenia: macroplatelet syndrome
.

In rheumatism, it is common in systemic lupus erythematosus, and systemic lupus erythematosus with thrombocytopenia as the first symptom is not uncommon, and can also be seen in antiphospholipid syndrome, Sjogren syndrome, overlap syndrome, etc
.