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Comparison between reference ranges for thyroid hormones as calculated by our analysis and those proposed by the manufacturer.
| Reference ranges | TSH (μIU/mL) | free T4 (ng/dL) | free T3 (pg/mL) | |||
|---|---|---|---|---|---|---|
| 1st trimester | 2nd trimester | 1st trimester | 2nd trimester | 1st trimester | 2nd trimester | |
| Rhea cohort | 0.05–2.53 | 0.18–2.73 | 0.95–1.53 | 0.87–1.45 | 1.54–5.22 | 1.78–5.29 |
| Manufacturer | 0.4–4 | 0.89–1.76 | 1.8–4.2 | |||
TSH: thyroid-stimulating hormone; free T3: free triiodothyronine; free T4: free thyroxine.
