A platelet aggregation test checks how well your platelets clump together to form blood clots. Platelets are a type of blood cell. They help form blood clots by sticking together. A clot is what stops ...

Proteins circulate throughout your blood to help your body maintain fluid balance. Albumin is a type of protein the liver makes. It’s one of the most abundant proteins in your blood. You need a proper ...

Polymerase chain reaction (PCR) and rapid (antigen) tests for COVID-19 both involve taking a swab. Results for a PCR test take longer, as it needs to go to a laboratory. It is more costly but tends to ...

A vaginal wet mount test, or vaginal smear, is a gynecological exam. The doctor takes a sample of discharge and sends it for testing. Results can show whether a person has vaginitis, which is a term ...