Can CBC Test Monitor A Person’s Blood Loss?

Posted on Sun, 29 Jul 2018

Medically reviewed by Ask A Doctor - 24x7 Medical Review Team

Sun, 29 Jul 2018 Answered on

Fri, 2 Dec 2022 Last reviewed on

Question : Hello, I've had a lot of blood drawn from me this year because I've been to the ER three times a month so I've almost had a tube of blood drawn from me everyday for the past seven months. I've been feeling weak and have been having cold clammy skin so I got worried I have too much blood loss. I got my CBC checked yesterday and it was normal. The CBC only measures the percentage of rbcs in a sample of blood, it does not measure the total volume of blood in the body. So how can one tell from a CBC that there is not too much blood loss if it does not measure the total volume of blood in the body? Also, is the amount of blood I had drawn this year too much blood loss?

Answered by Dr. Dr. Esmeralda Sera (1 hour later)

Brief Answer:
Exams

Detailed Answer:

Hello,

A complete blood count (CBC) is a test that measures the cells that make up your blood: red blood cells, white blood cells, and platelets

With this exam we can have a right opinion about your blood loss. You don’t need further examination for this. At the moment that the value are normal. You have nothing to worry

Could you please download the the results of your exams

Regards

Above answer was peer-reviewed by : Dr. Prasad