Table 1.

Hematological parameters

Parameter	Symbol	Value
Maximum adult reticulocyte production rate per kilogram of tissue	Pamx,	1.21 × 108 (kg hr) -1
Maximum foetal reticulocyte production rate per kilogram of tissue	Pfmx	1.7 × 108 (kg hr) -1
Minimum foetal reticulocyte production rate per kilogram of tissue	Pfmn	2.48 × 106 (kg hr) -1
Time offset for production of adult erythrocytes	tOSa	50 days
Time constant for production of adult erythrocytes	τCa	75, 150, and 300 days
Time constant for decay of production of foetal reticulocytes	τCf	50, 100, and 200 days
Volume of adult red blood cell	Va	8.0 × 10-8 μm3
Volume of foetal red blood cell	Vf	1.25 × 10-7 μm3

Baseline parameters for adult (HbA) and foetal (HbF) RBCs [44].