You may determine how much haemoglobin is in your blood by taking a haemoglobin test. It is most frequently used to detect whether you have anaemia, a disorder marked by low numbers of red blood cells. Blood cells called platelets aid in blood clotting. Normally, it is carried out as part of a complete blood count. A typical platelet count per microliter of blood is from 150,000 to 400,000. The presence of some malignancies or illnesses is indicated by a low platelet count. A high platelet count, however, can increase your risk of a stroke or blood clots.