How long can blood be stored outside the human body?
550119
Donated blood only lasts 28-42 days. Platelets, which contain clotting agents, last only 5 days.
564697
Nothing much.\n\nThe first point to realise is that the blood you donate will almost certainly not be transfused as whole blood. It will be separated into platelets, red blood cells, plasma and so forth. Red blood cells (RBCs),plasma and platelets have no nuclei and so have none of you DNA worth speaking of.\n\nThe only part of the blood that contains measurable DNA is the white blood cells. They won't get transfused in most cases. But even if whole blood was transfused the WBCs only have a life expectancy of a few weeks. So unless someone committed a crime within weeks of a massive whole blood transfusion it simply isn't an issue. The odds of anyone who receives a massive whole blood transfusion being able to commit a crime is very slim to say the least.\n\nIn the ridiculously improbable scenario that someone does commit a crime AND cuts themselves AFTER a massive whole blood transfusion you are still in the clear. The blood will contain genetic material form you and him and several other donors. That will not produce a positive match for your DNA. At worst it will indicate that you and at least three other people were all there bleeding in the same spot at the same time, which nobody will believe given the blood spatter pattern.\n\nRelax, it's just not an issue.
331116
Doesn't hurt any more than giving blood.  From memory takes about 40 minutes
248522
Studies in a chimpanzee suggest that HCV may survive on environmental surfaces at room temperature at least 16 hours but not longer than 4 days. The potential for HCV to survive in the environment re-emphasizes the importance of cleaning and disinfecting.   http://www.hepc-connection.org/newsletter/01-03_04/stability.shtml\n\nHow long can HCV live outside the body and transmit infection? \nRecent studies suggest that HCV may survive on environmental surfaces at room temperature at least 16 hours, but no longer than 4 days.  http://www.hivandhepatitis.com/hep_c/hepc_bas.html#how2 and\nhttp://www.hivandhepatitis.com/hep_c/hepc_bas.html#how2
349492
Can be anywhere from 2 weeks to 6 months. Without blood tests pretty quick. Toxicology takes awhile.
495341
If the blood of the primate is very similar to your blood. Otherwise, your body may not cope with it, and you will die, or your body rejects it, and you will die. Unless you transfuse it out of you, but that leaves you with no blood again.
47385
It depends on a lot of factors. As long as the fingure is stored correctly and the tissue does not die, the finger can be reattached. A safe guess would be at least an hour if iced as soon as it is severed and stored correctly. I'm sure there are instances when it can be stored for a several hours, if not longer.
876949
Blood substitutes, often called artificial blood, are used to fill fluid volume and/or carry oxygen and other gases in the cardiovascular system.Blood substitutes can be stored for much longer than transfused blood, and can be kept at room temperature. Most hemoglobin-based oxygen carriers in trials today carry a shelf life of between 1 and 3 years, compared to 42 days for donated blood, which needs to be kept refrigerated.Blood substitutes allow for immediate full capacity oxygen transport, as opposed to transfused blood which can require about 24 hours to reach full oxygen transport capacity due to 2,3-diphosphoglycerate depletion.
1086176
You replace the blood you've donated within 24 - 48 hours.\nUnless you have a condition or disease that prevents you from giving blood, you should have no problems.  Just to be sure, ask your doctor.  You are very special and are doing a wonderful service to people.
751995
Platelets are activated outside the body. Sometimes it does clot inside the body unforunately.
668393
the answer is 6-10 minutes if u are healthy, the question was how long u can LIVE not stay conscious. therefore the body organs and cells can last from 6-10 minutes.furthermore 4-6 minutes without minutes without breathing the cells begin to deteriorate, then 6-10 minutes without breathing the cells begin to die. u can only be resucitated after 10 minutes ONLY if your core temperature is well below normal hypothermic.
571244
I work at a blood bank and I have never seen anything get past our lab it is possible but rare. Most hospitals make sure that the centers that they receive blood from has excellent track records.
694090
Temperature start to drop immediately after death, then progressively keeps going down at a rate of 2 degrees Celsius per hour until reaches the room temperature, at this point the flesh start to decompose unless is kept in a refrigerated drawer, normally yes is possible to determine the approximate time from death if is less than 6 hours..☺
810731
I believe that the virus can survive even outside human blood (My mother works for the county and they issue her a disinfectant spray that can kill the virus responsible for HIV/Aids from things people have touched).\n\n\nHowever, I don't believe it lasts long unless it's in a controlled environment. If it's kept warm and protected, I'm sure that it can survive for some time.
1023865
Actually, yes. Well, let me rephrase that. In certain areas, yes. It depends what country, where in that country, the climate, the plant life... that sort of thing. But in many areas I think I could safely survive for at least 1 week. But, as I said, it really depends on the circumstances. And, if I were injured, who knows. It's all relative.
883967
Blood is about 7% of the human body weight, so the average adult has a blood volume of about 5 litres, of which 2.7-3 litres is plasma. Human blood density is around 1060 kg/m³. The combined surface area of all the red cells in the human body would be roughly 2,000 times as great as the body's exterior surface
392147
Diffent centres have different recommendation for storage of whole blood. In some centres in theworld 35+days is also possible with modern preservatives. Individual blood components can be stored for evenlonger or shorter periods depending on their halflife and the utility intended. \n\nmore and more redblood cells in whole blood undergo haemolysis after a certain durarion of time. This releases potasium which is harmful in high levels in the transfusuion receipient if transfused in such a state.The nmber of Red blod cells also decrease with haemolysis. \n\nhaemoglobin from lysed cells are later found in free plasma and large levels of free Hb can clog renal tubules if transfused and result in renal failure. This is especially true in massive transfusions.\n\nThe 2,3 DPG levels in RBCs decrease considerably with the duration of storage and therefore make them unsuitable to release oxygen to tissues.\n\nThe current storage technique of whole blood limits its useful lifespan to 20-40 days depending on the facilities available. Maybe in the future with better techniques longer storage will be possible or better still we may have blood substitues that work better than blood especially especially for oxygenation of tissues.