What are the general tests for diagnosing functional uterine bleeding?

The general examinations for the diagnosis of functional uterine bleeding include routine blood tests and bleeding and coagulation function tests.

(1) Blood routine

Since dysfunctional uterine bleeding is often accompanied by anemia, routine blood tests can be used to diagnose whether the patient has anemia through red blood cell count, hemoglobin, and hematocrit; platelet count is used to understand whether dysfunctional uterine bleeding is caused by thrombocytopenia and to exclude blood system diseases. The specific methods and parameters are as follows:

Detection method: automated hematology analyzer detection method.

Specimen: EDTA-K2 anticoagulated whole blood.

Reference range (adult female): hemoglobin (Hb) 110g~150g/L; red blood cells (RBC) (3.5~5.0)×1012/L; hematocrit (HCT) 0.37~0.47; platelet count (PLT) (100-300)×109/L.

(2) Blood flow and coagulation function test

Dysfunctional uterine bleeding can often be caused by bleeding that leads to a lack of coagulation factors in the body, resulting in changes in blood coagulation function; in addition, bleeding can also be caused by medical diseases such as coagulation defects and hemorrhagic diseases, so the two need to be carefully distinguished. Clinical determination of blood coagulation function is mainly used to screen whether the body has blood coagulation abnormalities. If blood coagulation abnormalities exist, the cause needs to be further clarified. Clinically, the determination of plasma prothrombin time (PT) and activated partial thromboplastin time (PT) can be mainly used to screen for abnormalities in the patient's internal and external coagulation systems. The specific methods and parameters are as follows:

Detection methods: manual method, automatic coagulometer method.

Specimen: 109mmol/L sodium citrate solution anticoagulated plasma (whole blood:anticoagulant ratio is 9:1).

Reference range: PT: 11~13 seconds; APTT: 32~43 seconds.