Table 6.

Correlations between storage iron, bioavailable iron, and red blood cell production in patients with normal C-reactive protein levels and patients with elevated C-reactive protein.

	Serum iron		Serum transferrin		Mean corpuscular volume		Mean corpuscular haemoglobin		Mean corpuscular haemoglobin concentration
	r-value; P-value		r-value; P-value		r-value; P-value		r-value; P-value		r-value; P-value
	N CRP	↑ CRP	N CRP	↑ CRP	N CRP	↑ CRP	N CRP	↑ CRP	N CRP	↑ CRP
Serum transferrin					−0.62; .005	−0.03; .88	−0.74; .0003	−0.08; .68	−0.79; .0001	−0.17; .39
Transferrin saturation					0.62; .005	0.43; .030	0.64; .003	0.48; .013	0.49; .033	0.33; .10
Transferrin/log ferritin					−0.66; .002	0.08; .69	−0.72; .0005	0.03; .88	−0.70; .001	−0.11; .57
Soluble transferrin receptor	−0.52; .024	0.14; .47	0.59; .007	0.11; .59	−0.65; .002	−0.04; .85	−0.75; .0002	−0.08; .69	−0.75; .0002	−0.18; .35
Soluble transferrin receptor/log ferritin					−0.60; .007	0.06; .77	−0.65; .003	−0.003; .99	−0.61; .005	−0.18; .35