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Table 3 Estimated and measured levels of n-3 PUFAs. All data are shown as median (IQR).

From: Development and internal validation of a non-invasive clinical tool to predict sufficient omega-3 levels in early pregnancy

n-3 PUFA Levels of Total Cohort (n = 307)

ALA

Estimated intake, mg/week

2487.0 (1141.0–5889.0)

Measured serum levels, % of total fatty acids

0.74 (0.61–0.89)

EPA

Estimated intake, mg/week

351.6 (127.5–832.2)

Measured serum levels, % of total fatty acids

0.60 (0.47–0.75)

DHA

Estimated intake, mg/week

820.0 (224.4–1457.7)

Measured serum levels, % of total fatty acids

2.57 (2.16–2.98)

DPA

Estimated intake, mg/week

306.6 (170.2-459.3)

Measured serum levels, % of total fatty acids

0.50 (0.43–0.62)

Total long-chain n-3 PUFAs *

Estimated intake, mg/week

1431.0 (630.1–2682.9)

Measured serum levels, % of total fatty acids

3.73 (3.14–4.19)

Total n-3 PUFAs †

Estimated intake, mg/week

4648.0 (2285.0–8728.0)

Measured serum levels, % of total fatty acids

4.47 (3.96–4.96)

  1. Estimated intake accounts for dietary and supplementary sources of n-3
  2. *Total long-chain n-3 PUFAs are calculated from the sum of EPA, DHA and DPA
  3. †Total n-3 PUFAs are calculated from the sum of ALA, EPA, DHA and DPA
  4. n-3 = omega-3; PUFA = polyunsaturated n-3 fatty acid; ALA = alpha-linolenic acid, EPA = eicosapentaenoic acid; DHA = docosahexaenoic acid; DPA = docosapentaenoic acid