Table 1 Characteristics of methods used by the participants

Beckman Coulter Inc, Brea, CA, USA

LX 20 Clinical System (Synchron)

CREm (Creatinine) Reagent

n = 1

AP-K, NC

UniCel DxC 800 Synchron Clinical System

CREm (Creatinine) Reagent

n = 1

AP-K, NC

Roche Diagnostics, Mannheim, Germany

Modular P

CREA Creatinine Jaffe method compensated

n = 2

AP-RB, C

Integra 400 plus

Creatinine Jaffé Gen.2 compensated, CREP2 Creatinine plus vers.2

n = 2

AP-K, C and E liquid

Integra 800

Creatinine Jaffé Gen.2 compensated, CREP2 Creatinine plus vers.2

n = 3

AP-K, C and E liquid

Cobas 6000

Creatinine Jaffé Gen.2 compensated, CREP2 Creatinine plus vers.2

n = 6

AP-K, C and E liquid

Cobas 8000

Creatinine Jaffé Gen.2 compensated

n = 2

AP-RB, C

Abbott Laboratories, Abbott Park, Il, USA

Architect C16000

CreaC

n = 2

AP-K, NC

Siemens, Erlangen, Germany

Dimension Vista 1500

ECREA, CREA: Dimension Vista creatinine

n = 2

E liquid or AP-K, NC

Advia 1650

CREA

n = 1

AP-K, NC

Sysmex Europe, Norderstedt, Germany

Olympus AU2700

Creatinine Jaffe

n = 1

AP-K, NC

Ortho Clinical Diagnostics (OCD) Inc, Rochester, NY, USA

Vitros 5600

CREA slides

n = 1

E dry

Vitros 5,1 FS

CREA slides

n = 2

E dry