Table 2.

Hemoglobin Concentrations in 85 Healthy Women With Proven Iron tores

Hemoglobin (g/dL)	Nonpregnant	Midpregnancy	Late Pregnancy
Mean	13.7	11.5	12.3
Less than 12.0	1%	72%	36%
Less than 11.0	None	29%	6%
Less than 10.0	None	4%	1%
Lowest	11.7	9.7	9.8

Adapted with permission from Cunningham F et al.²²