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Table 2 sFlt-1 testing characteristics

From: Levels of soluble fms-like tyrosine kinase one in first trimester and outcomes of pregnancy: a systematic review

Reference

Storage Temperature

Dilution

Duplicate Testing

Intraassay Coefficient

Interassay Coefficient

Sensitivity

Akolekar, 2010

-80°C

 

yes

  

15 pg/mL

Baumann, 2008

-30°C

1:3

 

3.8%

7.0%

 

Chaiworapongsa, 2005

-70°C

  

6.9%

4.8%

17.8 pg/mL

Erez, 2008

-70°C

  

3.9%

1.4%

17.0 pg/mL

Eskild, 2008

-20°C

1:5

   

17 pg/mL

Lynch, 2010

-80°C

 

yes

 

9.9%

 

Noori, 2010

-70°C

 

yes

  

3.5 pg/mL

Rana S 2007

-80°C

 

yes

3.5%

8.1%

 

Smith, 2007

   

10.4%

14.9%

5 pg/mL

Thadhani, 2004

-80°C

 

yes

3.5%

8.1%

 

Vatten, 2007

-20°C

1:5

   

17 pg/mL

Wathen, 2006

-80°C

 

yes

5.0%

8.2%

5 ng/L

  1. All blood testing done using ELISA testing kits developed by R&D Systems.