DescriptionReference ranges for TSH, FT4, JTI and SPINA-GT.svg
English: Reference ranges for thyroid's secretory capacity (SPINA-GT) and Jostel's TSH index (TSHI or JTI) compared to univariable reference ranges for thyrotropin (TSH) and free thyroxine (FT4), shown in the two-dimensional phase plane defined by serum concentrations of TSH and FT4.
Deutsch: Referenzbereiche für die Sekretionsleistung der Schilddrüse (SPINA-GT) und den TSH-Index nach Jostel (TSHI oder JTI) verglichen mit univariablen Referenzbereichen für Thyreotropin (TSH) und freies Thyroxin (FT4), dargestellt im zweidimensionalen Phasenraum, der durch TSH- und FT4-Serumkonzentrationen definiert ist.
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