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Sample S1

Sample S2

(ng/dL)

D ¹

Z ²

Da% ³

(ng/dL)

D ¹

Z ²

Da% ³

RH01b

RH01

2

5

1.55

-0.1

-0.5

-18%

1.17

0.0

-0.1

-4%

RH07b

RH07

2

3

1.67

0.0

0.4

13%

1.20

0.0

0.2

7%

RH14

RH14

2

3

1.96

0.3

2.6

87%

1.23

0.1

0.6

18%

CL009

CL009

2

5

1.49

-0.1

-1.0

-33%

1.13

-0.1

-0.6

-18%

CL010

CL010

2

6

1.80

0.2

1.4

46%

0.90

-0.3

-3.1

-99%

CL012

CL012

2

3

1.57

-0.1

-0.4

-13%

0.99

-0.2

-2.1

-67%

CL013

CL013

2

5

1.62

0.0

0.0

0%

1.15

0.0

-0.3

-11%

CL015

CL015

2

4

1.93

0.3

2.4

80%

1.12

-0.1

-0.7

-21%

Median of RIA Group

1.65

1.14

Range of RIA Group

1.49 – 1.96

0.90 – 1.23

Robust average⁴ of RIA Group

1.70 ( n = 8 )

1.12 ( n = 8 )

Robust SD⁴ of RIA Group

0.20

0.11

CV of RIA Group

11.8%

9.8%

Median of European RIA labs

1.63 ( n = 107 )

1.17 ( n = 104 )

Range of European labs (16% – 84%)

1.47 – 1.87

1.06 – 1.42

RH01a

RH01

4

9

1.88

0.3

2.0

67%

1.39

0.2

2.3

74%

RH02c

RH02

4

1

1.41

-0.2

-1.6

-54%

0.93

-0.3

-2.8

-88%

RH06

RH06

4

9

1.70

0.1

0.6

21%

1.22

0.0

0.4

14%

RH07a

RH07

4

2

1.27

-0.4

-2.7

-90%

1.10

-0.1

-0.9

-28%

RH12

RH12

4

2

1.37

-0.3

-1.9

-64%

1.02

-0.2

-1.8

-56%

RH19

RH19

4

2

1.38

-0.2

-1.8

-62%

1.08

-0.1

-1.1

-35%

RH20

RH20

4

7

1.55

-0.1

-0.5

-18%

1.11

-0.1

-0.8

-25%

CL005

CL005

4

9

1.67

0.0

0.4

13%

1.23

0.1

0.6

18%

CL006a

CL006

4

7

1.57

-0.1

-0.4

-13%

1.35

0.2

1.9

60%

CL008

CL008

4

1

1.39

-0.2

-1.8

-59%

0.90

-0.3

-3.1

-99%

CL011

CL011

4

13

1.65

0.0

0.2

8%

1.17

0.0

-0.1

-4%

CL014b

CL014

4

1

1.42

-0.2

-1.5

-51%

0.93

-0.3

-2.8

-88%

Median of CLIA Group

1.49

1.11

Range of CLIA Group

1.27 – 1.88

0.90 – 1.39

Robust average⁴ of CLIA Group

1.51 ( n = 12 )

1.12 ( n = 12 )

Robust SD⁴ of CLIA Group

0.19

0.18

CV of CLIA Group

12.6%

16.1%

Median of European labs

1.63 ( n = 986 )

1.19 ( n = 947 )

Range of European CLIA labs (16% – 84%)

1.38 – 1.79

1.00 – 1.28

Median of All Labs

1.57

1.13

Range of All Labs

1.27 – 1.96

0.90 – 1.39

Robust average⁴ of All Labs

1.59 ( n = 20 )

1.11 ( n = 20 )

Robust SD⁴ of All Labs

0.21

0.15

CV of All Labs

13.2%

13.5%

Median of All European Labs

1.62

1.18

Range of All European Labs (16% – 84%)

1.38 – 1.80

0.99 – 1.29

Mean of All European Labs

1.60 ( n = 1177 )

1.16 ( n = 1140 )

SD of All European Labs

0.20

0.15

CV of All European Labs

12.7%

13.0%

1. D = X - Xa

2. Z_score = D / Target SD

3. Da% (Your result from target as percentages of allowed deviation) = D/(Xa x MAD) x 100%

4. Robust results were calculated by Algorithm A according to ISO 13528:2005 and IUPAC/CITAC Guide: Selection and use of proficiency testing scheme for a limited number of participants. Pure Appl Chem 2010;82:1099 – 135.

5. The Target value (Xa) is the median of the results of this control material used in European surveys.

6. Maximum allowable deviation (MAD) 24%, Target SD = 8% x Xa

Sample S1

Sample S2

Target value (Xa)⁵

(1 pmol/L = 0.0777 ng/dL)

1.62 ng/dL = 20.9 pmol/L

( n = 1177 )

1.18 ng/dL = 15.2 pmol/L

( n = 1140 )

Target SD⁶

0.13

0.09

Method Name

Method Code

Laboratory

Radioimmunoassay

( Competitive - type ) 

2

RH01b, RH07b, RH14, CL009, CL010, CL012, CL013, CL015,

Chemiluminescent Immunoassay

( Competitive - type )

4

RH01a, RH02c, RH06, RH07a, RH12, RH19, RH20, CL005, CL006a, CL008, CL011, CL014b,

Reagent Kit

Reagent Code

Laboratory

Abbott Architect

1

CL008, CL014b, RH02c,

Beckman Coulter Access

2

RH07a, RH12, RH19,

Cisbio RIA-gnost

3

CL012, RH07b, RH14,

Diasorin

4

CL015,

Immunotech

5

CL009, CL013, RH01b,

MP

6

CL010,

Siemens ADVIA Centaur

7

CL006a, RH20,

Siemens Immulite 2000

9

CL005, RH01a, RH06, `

Roche

13

CL011,