anti-Sa antibody

The anti-Sa antibody is an autoantibody that Despres is equivalent to reported in 1994 in the serum of patients with rheumatoid arthritis. The target antigen (Sa antigen) was first found in the human spleen and then found in human placenta and rheumatoid synovium, which may be the normal tissue component of the human body. Analysis by immunoblotting technique showed that the molecular weight of Sa antigen in human spleen was 50 kD, while that of human placenta was 50 and 55 kD.

Basic Information

Specialist classification: growth and development check classification: immunological examination

Applicable gender: whether men and women apply fasting: not fasting

Analysis results:

Below normal:

Normal value:

Above normal:

Normal human anti-Sa antibody is negative.

Suffering from rheumatoid arthritis, Sjogren's syndrome, positive.

Tips: Relax and not be overly nervous. Normal value

Normal human anti-Sa antibody is negative.

Clinical significance

Abnormal results with rheumatoid arthritis, Sjogren's syndrome, positive.

The people in need of examination should be affected by joints, morning stiffness, accelerated erythrocyte sedimentation rate, positive antinuclear antibodies, patients who were more severe than anti-Sa antibody-negative patients, or patients with autoimmune diseases.


Before the exam: relax and not be overly nervous.

When checking: Actively cooperate with the doctor.

Inspection process

The cells in the spleen or placental cells were taken and analyzed by immunoblotting. Actively cooperate with doctors.

Not suitable for the crowd

There are no taboos.

Adverse reactions and risks

There are no related complications and hazards.