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Table 2 Metal ion reference values

From: Reducing the failure rate of hip resurfacing in dysplasia patients: a retrospective analysis of 363 cases

  Normala Optimalb Acceptablec Problematicc Potentially Toxicb
Unilateral      
 • Co <1.5 μg/L <4.0 μg/L 4–10 μg/L 10–20 μg/L >20 μg/L
 • Cr <1.5 μg/L <4.6 μg/L 4.6–10 μg/L 10–20 μg/L >20 μg/L
Bilateral      
 • Co <1.5 μg/L <5.0 μg/L 5–10 μg/L 10–20 μg/L >20 μg/L
 • Cr <1.5 μg/L <7.4 μg/L 7.4–10 μg/L 10–20 μg/L >20 μg/L
  1. alaboratory normal for patients without metal bearings
  2. baccording to DeSmet /van der Straeten
  3. caccording to our previous analysis