Has your body been affected by any infection?
There are many other markers in your blood that measure your health and how your body has been affected by an infection, including by Covid-19. These markers are found in your blood and range from the different types of cells found there, and their ratio of one to the others, as well as chemical markers which give insight into your physiological health and how your immune system has responded to an infection.
If you have already tested positive for Covid-19 or think you may have had Covid-19, these blood tests will tell you about how well you have recovered from the infection, whether the Covid-19 virus has harmed your body and how well your immune system is functioning and your current general health.
What's in it?
A c-reactive protein test measures the level of c-reactive protein (CRP) in your blood. CRP is a protein made by your liver. It's sent into your bloodstream in response to inflammation. Inflammation is your body's way of protecting your tissues if you've been injured or have an infection. It can cause pain, redness, and swelling in the injured or affected area. Some autoimmune disorders and chronic diseases can also cause inflammation.
Normally, you have low levels of c-reactive protein in your blood. High levels may be sign of a serious infection or other disorder.
Other names: c-reactive protein, serum
A D-dimer test looks for D-dimer in blood. D-dimer is a protein fragment (small piece) that's made when a blood clot dissolves in your body.
Blood clotting is an important process that prevents you from losing too much blood when you are injured. Normally, your body will dissolve the clot once your injury has healed. With a blood clotting disorder, clots can form when you don't have an obvious injury or don't dissolve when they should. These conditions can be very serious and even life-threatening. A D-dimer test can show if you have one of these conditions.
Other names: fragment D-dimer, fibrin degradation fragment
A troponin test measures the level of troponin in your blood. Troponin is a type of protein found in the muscles of your heart. Troponin isn't normally found in the blood. When heart muscles become damaged, troponin is sent into the bloodstream. As heart damage increases, greater amounts of troponin are released in the blood.
High levels of troponin in the blood may mean you are having or recently had a heart attack. A heart attack happens when blood flow to the heart gets blocked. This blockage can be deadly. But quick diagnosis and treatment can save your life.
Other names: cardiac troponin I (cTnI)
A ferritin blood test measures the level of ferritin in your blood. Ferritin is a protein that stores iron inside your cells. You need iron to make healthy red blood cells. Red blood cells carry oxygen from your lungs to the rest of your body. Iron is also important for healthy muscles, bone marrow, and organ function. Too little or too much iron in your system can cause serious health problems if not treated.
Other names: serum ferritin, serum ferritin level, ferritin serum
When is it suggested?