Table 3

Comparison of CM agents by osmolality and viscosity

Blood plasmaIso-osmolar
eg, Visipaque
Low-osmolar
eg, Omnipaque
High-osmolar
eg, Hypaque
Osmolality290 mosmol/L290 mosmol/L890 mosmol/L2100 mosmol/L
Viscosity3–4 mPa s8.8 mPa s6.8 m mPa s4.1 mPa s
CIN riskN/ALowLowHigh
  • CIN, contrast-induced nephropathy; CM, contrast media.