Table 1.
Thyroid hormone value. *
| TSH mU/L | Total T4 (μg/dL) | Total T3 (ng/dL) | FT4 (ng/dL) | FT3 (ng/L) | |
|---|---|---|---|---|---|
|
| |||||
| April 2013 | |||||
| Immulite 2000 (Siemens) a | 2.95 | 18.10 | - | >5.98 | >39 |
|
| |||||
| April 2015 | |||||
| Immulite 2000 (Siemens) a | 5.80 | 15.22 | - | >5.98 | >39 |
| Delfia (Wallace) b | - | 13.51 | - | >5.98 | - |
|
| |||||
| June 2015 | |||||
| Elecsys 2010 (Roche) c | 9.1 | 8.9 | 209 | - | - |
| Elecsys 2010 + Ethanol extraction c | - | 8.5 | - | - | - |
| Immulite 2000 (Siemens) a | - | 14.20 | - | 5.75 | - |
| Immulite + ethanol extraction a | - | 6.56 | - | - | - |
| Architect 12000 SR (Abbott) d | - | 6 | - | 1 | - |
| DXI (Beckman) e | - | 14.6 | - | 1.03 | - |
| Cobas 6000 (Roche) f | - | 9.56 | 206 | 1.55 | - |
| Equilibrium dialysis g | - | - | - | 1.2 | - |
*
Patient results outside reference intervals are in bold type.
Reference intervals
a
Immulite:TSH; 0.4–5.5 mU/L, TT4; 4.5–12.5 μg/dL, TT3; 83–200 ng/dL, FT4; 0.77–1.94 ng/dL, FT3; 1.63–4.23 ng/L
b
Delfia: TT4; 5.36–11.0 μg/dL, FT4; 0.76–1.31 ng/dL
c
Elecsys: TSH; 0.4–3.6 mU/L, TT4; 5.1–13.5 μg/dL, TT3; 85–202 ng/dL
d
Architect: TT4; 4.87–11.72 μg/dL, FT4; 0.7–1.48 ng/dL
e
DXI: TT4; 6.09–12.23 μg/dL, FT4; 0.61–1.12 ng/dL
f
Cobas: TT4; 4.9–11.2 μg/dL, TT3; 94–182 ng/dL, FT4; 0.78–2.09 ng/dL
g
FT4, equilibrium dialysis; 0.8–2.7 ng/dL
Conversion traditional unit to SI unit
TT4 μg/dL × 12.87 = nmol/L, TT3 ng/dL × 15.36 = μmol/L, FT4 ng/dL × 12.87 = pmol/L, FT3 ng/ml × 1.536 = nmol/L