Serum Iron. A serum iron test determines the amount of iron in the liquid portion of the blood. Because the amount of iron in the blood varies throughout the day, experts at Lab Tests Online recommend performing iron testing the first thing in the morning. A normal range for iron in the blood, as reported by MedlinePlus, is 60mcg/dL to 170 mcg/dL.
Today cats live longer than ever. Just 20 years ago the life expectancy of a cat was four to six years; today they live 15 years or more. Life expectancy in cats depends on many things, but the most important factor is whether he is an indoor-only cat or an outdoor cat.
Typical Indoor Cat Lifespan. If a cat resides indoors exclusively, the typical lifespan ranges somewhere between 13 and 17 years, according to the ASPCA. However, it isn't uncommon for indoor cats to live to at least 20. The lifespan always depends on the individual cat. Some cats pass away well before 13, while others live long past 17. A lot of factors go into how long a cat will live.