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Table 8 Urinary glyphosate concentrations reported in previous papers

From: Optimization and validation of a highly sensitive method for determining glyphosate in human urine by solid-phase extraction and liquid chromatography with tandem mass spectrometry: a methodological study

Author, sampling country, sampling year

Study population (years)

Sample size

LOD (μg/L)

Detection rate

Units

Median

Max.

Knudsen et al., Denmark, 2011 [11]

Children (6-11)

14

NR

100%

μg/L

1.96

3.31

Mothers (31-52)

13

NR

100%

μg/L

1.28

3.22

Conrad et al., Germany, 2015 [10]

Adults (20-29)

399

0.1 (LLOQ)

31.8%

μg/L

NR

2.80

Jayasmana et al., Sri Lanka, NR [12]

Adults (39.3 ± 11.5)

10

0.6

NR

μg/L

3.3

5.5

   

μg/g cre

2.4

4.4

Parvez et al., USA (Indiana), 2015-2016 [13]

Pregnant Women (18-40)

71

0.1

93%

μg/L

3.25a

7.20

Connolly et al., Ireland, 2017 [14]

Farmer workers (33-66)

31

0.5

45%

μg/L

1.35b

10.66

  1. LOD limit of detection, LLOQ lower limit of quantification, NC not calculated, NR not reported, cre creatinine
  2. aMedian concentration except for <LOD samples
  3. bArithmetic mean