Table 2.

Serum FGF23 levels in systemic and local venous samplings.

< Systemic venous sampling>			<Second venous sampling >
	Right	Left
Internal jugular vein	432.8	392.8	External iliac vein	221.7
Subclavian vein	328.6	336.9	Deep femoral vein	209.5
Common iliac vein	379.7	414.2	Great saphenous vein	249.4
Internal iliac vein	362.5	339.7	Poplireal vien	234.0
External iliac vein	356.9	479.0	Posterior tibial vein (proximal)	282.9
			(distal)	326.1

^∗Serum FGF23 is presented in pg/mL. The second venous sampling was limited to the left lower limb.