There are three kinds of answers: ones that are mostly right, ones that are mostly wrong, and those that once were right but now are wrong. The typical life span of a healthy red blood cell is approximately 120 days. From 105 to 120 days is the average life span of a human red blood cell.+ 80 others found this useful.here are three kinds of answers: ones that are mostly right, ones that are mostly wrong, and those that once were right but now are wrong. The typical life span of a healthy red blood cell is approximately 120 days. From 105 to 120 days is the average life span of a human red blood cell.
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