A red blood cell's life span is approximately 4 months. I am a Leukemia patient. Red Blood cells are being created all of the time, if they lasted 4 months, we would overdos â¦ e on them.They last very short periods of time,,,,mere seconds. red blood cell's life span is approximately 4 months. I am a Leukemia patient. Red Blood cells are being created all of the time, if they lasted 4 months, we would overdos â¦ e on them.
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Where can you find the phone number of TransUnion so you can talk to an actual person about your credit report? Answer   Transunion Customer Service # (live person) 1-800-916-8800   Transunion Internet Account Customer service # (live person) 1-800-493-2392. 22 people found this useful.