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Table 2 Comparison of serum-PFAS concentrations (ng/ml) between the Canadian health measures survey (CHMS) study and the current study

From: Per- and poly-fluoroalkyl substances (PFAS) in circulation in a Canadian population: their association with serum-liver enzyme biomarkers and piloting a novel method to reduce serum-PFAS

 

CHMS Cycle 6

Current Study Baseline

(n=72)

PFAS

Geometric Mean (range) c

LOD

% Detection

GM (GSD)

PFBA

< 0.08 d

0.014

100

0.77 (1.55)

PFHxA

<0.08 d

0.008

100

0.59 (2.32)

PFHpA

NA e

0.008

90

0.44 (4.08)

PFOA

1.4 (1.2-1.6)

0.008

100

1.79 (1.69)

PFNA

0.48 (0.44–0.53)

0.010

97

0.84 (2.54)

PFDA

0.13 (0.11–0.15)

0.007

88

0.11 (2.92)

PFUdA

0.38 f

0.011

71

0.16 (4.11)

PFHxS

1.2 (1.0–1.4)

0.007

100

1.27 (2.42)

PFOS

3.6 (3.3–4.0)

0.012

100

4.16 (1.88)

GenXa

NA

0.014

71

0.45 (8.66)

PFOSA

NA

0.017

100

7.06 (1.79)

Total PFAS

   

21.51 (1.72)

NASEM PFASsb

   

9.19 (1.63)

  1. aTwo samples had GenX concentrations 57 and 62 ng/ml (2-fold higher than the next highest concentration). 75th percentile = 1.25 ng/ml. 95th percentile = 16.76 ng/ml
  2. bNASEM PFASs include PFOA, PFNA, PFDA, PFUnDA, PFHxS, PFOS. Me-FOSAA
  3. cCanadian Health Measures Survey (CHMS) study (2018-2019). Measured in males 12-79 years of age (PFBA, PFHxA, PFNA, PFDA, PFUdA) or 20-79 years of age (PFOA, PFHxS, PFOS). Health Canada, 2021
  4. dLOD (limit of detection) for the specified analyte in the CHMS
  5. eNA, Not analyzed
  6. fA GM was not reported for PFUdA because of a low detection rate (39%). Here we report the 90th percentile value
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Environmental Health

ISSN: 1476-069X