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Table 1 Spiked concentrations of BPA and BPA-glucuronide in three phases of round robin

From: A round robin approach to the analysis of bisphenol a (BPA) in human blood samples

Phase # Sample # Sample type Concentration of spiked uBPA (ng/ml) Concentration of spiked BPA-G (ng/ml)
   Pooled human serum Experimental blanks Environmental sample Commercial rat serum   
1 1 X     0.2 2
2 X     0.8 4
3 X     3.2 8
4 X     6.4 16
5 X     12.8 32
6 X     - -
7   water    - -
8   stripped serum    - -
9-13    Xa   - -
14-18    X   - -
2b 1 X     0.5 0.5
2 X     1.3 1.3
3 X     3.1 3.1
4 X     7.8 7.8
5 X     19.5 19.5
6 X     - -
7-11    X   - -
3b 1 X     0.5 0.5
2 X     1.3 1.3
3 X     3.1 3.1
4 X     7.8 7.8
5 X     19.5 19.5
6 X     - -
7 X     - 3.1
8 X     - -
9     X 0.09 0.8
10     X - 2.3
11     X - -
12-17    X   - -
  1. aSamples were collected with materials known to introduce BPA contamination. bNon-stripped human serum used for spiked samples.