One (rare) unit of heat is the pound calorie (lb-cal), defined as the amount of heat required to raise the temperature of one pound of water by one degree Celsius. On this scale the specific heat of water would be 1 lb-cal/(Kâlb).
Usually, menstrual bleeding lasts about 4 to 5 days and the amount of blood lost is small (2 to 3 tablespoons). However, women who have menorrhagia usually bleed for more than 7 days and lose twice as much blood. If you have bleeding that lasts longer than 7 days per period, or is so heavy that you have to change your pad or tampon nearly every hour, you need to talk with your doctor.
Report Abuse. The amount of blood that is withdrawn for any blood test will not be missed. The only thing you will possibly notice is maybe a small bruise at the site of the needle insertion but I have never even felt any pain afterwards. So to answer your question-there is no recovery time from a blood test.Source(s): RN. MisMischievous Â· 8 years ago.t depends upon the person. My husband has veins like garden hoses. He does not mind having blood taken. He walks in an out. I on the other hand have terrible veins and a blood phobia. When I have blood taken it makes me very sick. I sob, vomit, and usually faint.