Transferrin saturation is a calculated value resulting from a medical laboratory test to measure the amount of iron bound to transferrin in the blood. The liver produces transferrin, which is a protein that serves to bind iron molecules and carry them through the bloodstream to the bone marrow.
In addition to the cough, your child may also have a hoarse voice and have laboured breathing. Croup is most common in autumn and winter, and when a child is between 6 months and 3 years old. However, older children up to 15 years old sometimes get croup too. Croup is a common respiratory condition in children caused by either a viral infection or allergy.
Croup is usually caused by the parainfluenza virus, although there are many other possible viral causes. These include the RS virus, influenza virus type A, rhinovirus, adenovirus, and Coxsackie virus. If a child has had croup before, it may recur when they have a cold, as this is a viral infection.