What is a Cc of Blood? A "cc" of blood is 1 cubic centimeter of blood. A cubic centimeter is equal to 1 milliliter. The average human has about 5,000 cubic centimeters of blood. Blood is a necessary ingredient within the human body that distributes nitrogen, oxygen and different nutrients to important organs. Blood is composed of plasma and blood cells. Plasma incorporates proteins that help in blood clotting during harm. About half of blood quantity is made up of blood cells. Red blood cells carry oxygen to tissues and organs, white blood cells combat infections and platelets assist in blood clotting. The American Red Cross collects roughly 15.7 million blood donations yearly within the United States. About 1 pint, or 473 cubic centimeters, of blood is collected through the donation. In line with the American Red Cross, one blood donation can save up to 3 lives, as red blood cells, platelets and plasma can be used individually from the blood.

The Apple Watch Series 6 feels prefer it has perfected many of the features I liked about its predecessor. It has a brighter at all times-on display, a extra highly effective processor, quicker charging and two new colorful options to select from. However the function I used to be most excited to try out was its new sensor that measures oxygen saturation within the blood (aka BloodVitals SPO2) with the tap of a display screen. As someone who panic-purchased a pulse oximeter at the start of the coronavirus pandemic and BloodVitals SPO2 still checks her ranges at the primary signal of a cough, the thought of having one strapped to my wrist always was sufficient to pique my interest. But in contrast to the ECG function on the Apple Watch, which has been tried, examined and cleared by the US Food and Drug Administration, together with the irregular heart rhythm notifications, SpO2 on the Apple Watch nonetheless appears to be in its early levels. Navigating all this new data could be daunting for anyone who's not a medical skilled.

I purchased an FDA-cleared pulse oximeter, the gadget medical doctors use to measure BloodVitals SPO2 on your fingertip, as a precaution when coronavirus cases in the US started to climb. Having low blood oxygen levels doesn't guarantee you might have COVID-19, but it is one of the foremost signs of the disease. I had learn horror tales of people who waited too lengthy to go to the hospital and had died of their sleep as a result of they did not realize their ranges had dipped overnight. You should at all times examine with a physician if you are experiencing shortness of breath (one other symptom of COVID-19), even if a pulse oximeter says you're in a wholesome vary, however I found consolation in knowing that I might at least use it as a reference if I ever experienced shortness of breath. That's not something you are able to do with the Apple Watch -- Apple says it needs to be used for wellness functions solely and never as a medical machine, that means you may should take the outcomes with a grain of salt and should not use it to display screen for any kind of illness, which is what I had been hoping to get out of it.

But there could also be different advantages of getting it strapped on your wrist always. Very like a pulse oximeter, the Series 6 makes use of red and infrared light from its new sensor to determine the share of oxygen within the blood. But instead of shining the light by means of your fingertip, BloodVitals SPO2 device it makes use of the light that's mirrored again from the blood vessels in your wrist to determine your oxygen ranges primarily based on the color of your blood. During the setup process you are requested whether or not you need to activate BloodVitals SPO2 tracking, BloodVitals SPO2 which I did, however you can at all times return and disable it in the settings after the very fact. The first thing I did after strapping on the Watch was open the Blood Oxygen app. It gives you a number of tips about how you can get the most effective result and you should relaxation your arm on a desk or flat surface while the Watch is taking a studying.

Then the 15-second countdown begins and you're achieved -- easy and painless. I bought a 95% on my first read, which was lower than what I'm used to from my pulse oximeter. Anything above 90% is usually considered by clinicians to be inside a wholesome vary, but most often, larger is better. I tested it a couple of extra occasions and acquired slightly totally different outcomes within a number of proportion factors depending on whether or not I was fully nonetheless and silent in the course of the check, where I had the watch positioned on my wrist and the way tight the strap was. There are lots of elements that may have an effect on a studying, reminiscent of pores and skin temperature or the position of the sensors on the body. Side-by-facet with my pulse oximeter, the Apple Watch was often off by about one or two points, but sometimes spot on. What was extra fascinating to me was the BloodVitals SPO2 device information that collected over time within the Health app .