Table 1.

Thyroid Timeline Before Administration of L-T4 Oral Solution

Treatment/Action Taken/Presentation	Initial Presentation	6 Weeks	12 Weeks	18 Weeks	24 Weeks
	L-T4 Tablet (Synthroid®) 125 µg	T4/T3 Compounded Medication	T4/T3 Compound at Escalated Dosing	T4/T3 Compound at Escalated Dosing	Started with Worsening GI Issues, Gastroparesis, and Vomiting
TSH, mIU/L (NR 0.45–4.50 mIU/L)	5.30	4.65	6.50	2.60	7.42
Free T4, pmol/L (NR 10.55–22.78 pmol/L)	16.60	16.60	18.53	24.07	19.82
Free T3 pmol/L (NR 3.39–6.16 pmol/L)	Not evaluated	4.47	5.24	4.93	5.24

Abbreviations: GI, gastrointestinal; L-T4, levothyroxine; NR, normal range; T3, triiodothyronine; T4, thyroxine; TSH, thyroid-stimulating hormone.