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Erythrocytes and Haemoglobin:Normal
Values at Various Ages
|
|
Age
|
Red blood cell count
millions/mm3
|
Haemoglobin g/dl
|
| Days 1 - 13 |
5.1 + 1.0
|
19.5 + 5.0
|
| Days 14 - 60 |
4.7 + 0.9
|
14.0 + 3.3
|
| 3months to 10 years |
4.5 + 0.7
|
12.2 + 2.3
|
| 11 -15 years |
4.8
|
13.4
|
| Adults : |
| Males |
5.4 +
0.8 |
14.0 +
1.4 |
| Females |
4.8 +
0.6 |
13.3 +
1.2 |
|
Erythrocytes and Haemoglobin:Normal
Values at Various Ages
|
| Erythrocyte life span |
|
| |
normal |
120 days
|
| 51Cr-labelled half-life |
28 days
|
| Iron turn-over rate (plasma) |
20 - 42 mg/24 hr
|
| Osmotic fragility |
| |
Haemolysis,
slight |
0.45 - 0.38 %
|
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|
Haemolysis, complete |
0.33 - 0.30 %
|
| |
Reticulocyte
index |
<2
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