Description
T4 Levothyroxine liquid is T4 (levothyroxine), a thyroid hormone (prohormone), supplied as a 30mL liquid at 400mcg/mL (12,000mcg per bottle). This batch tested at 99.34% purity. It’s sold for laboratory research only.
What is T4 (levothyroxine)?
Levothyroxine is synthetic T4, thyroxine, the main hormone the thyroid gland makes. It’s one of the most prescribed drugs in the world, used for hypothyroidism under names like Synthroid.
T4 is mostly a prohormone. Enzymes in the liver, kidney, brain and other tissues remove one iodine atom to make T3, the active form.
T4 mechanism of action
T4 circulates bound to carrier proteins and enters cells through transporters such as MCT8. Inside, type 1 and type 2 deiodinases strip one iodine to make T3, while type 3 deiodinase makes inactive reverse T3.
That local conversion lets each tissue set its own thyroid signal. The T3 produced then acts on nuclear thyroid hormone receptors to switch on metabolic genes.
T4 Levothyroxine liquid technical data
- Compound: T4 (levothyroxine)
- Also known as: levothyroxine, thyroxine, L-T4
- CAS number: 51-48-9
- Molecular formula: C15H11I4NO4
- Molar mass: 776.9 g/mol
- Structure: tetraiodinated tyrosine derivative
- Concentration: 400mcg/mL
- Volume: 30mL (12,000mcg in total)
- Form: ready-made liquid in a glass dropper bottle
- Purity: 99.34% (mass spectrometry and HPLC-UV)
- SKU: BSP-T4-30
- Use: laboratory research only
Published T4 studies
T4 has a half-life of about seven days, so its levels in blood stay steady. That’s the main reason it, not T3, is the standard replacement hormone.
Research uses it to study the deiodinase enzymes that control how much T3 each tissue makes, and in models of thyroid deficiency and excess.
For the original studies, try this PubMed search.
T4 Levothyroxine liquid vs related compounds
Labs choosing T4 Levothyroxine liquid usually weigh it against a few close relatives. T4 is the prohormone that tissues convert to T3, with a half-life of about a week, while:
- T3 is the active thyroid hormone, with a half-life of about a day
T4 is the hormone the thyroid makes, and T3 is the active form tissues make from it. Labs use T3 to act on receptors directly and T4 to study conversion. See them all on our research liquids page.
Measuring T4 Levothyroxine liquid
The concentration is 400mcg/mL, so the math is simple: every 1mL holds 400mcg, and every 0.1mL holds 40mcg. The whole 30mL bottle holds 12,000mcg.
The dropper in the cap is fine for transferring liquid, but it isn’t marked finely enough for accurate measuring. For that, use a graduated 1mL measuring dropper, which reads in 0.1mL steps and costs $1.99.
T4 Levothyroxine liquid storage and shelf life
Room temperature is fine for T4 Levothyroxine liquid. Keep it upright, capped and out of the sun, and write the opening date on the label.
T4 Levothyroxine liquid quality and batch records
Purity for this batch of T4 Levothyroxine liquid came back at 99.34% by HPLC and mass spectrometry. That’s the figure for the batch currently in stock.
The label on each bottle shows the compound, the strength and the batch. Ask us for the certificate of analysis for your batch and we’ll email it over.
Keep the batch number with your records. It’s the quickest way to match a bottle to its paperwork later.
Buy T4 Levothyroxine liquid with a free bottle
T4 Levothyroxine liquid comes in more than one quantity. Pick the option you want from the dropdown above the cart button:
- 1 bottle: $24.67
- Buy 2 get 1 free: 3 bottles for $49.34, about $16.45 a bottle
The free-bottle offer is the easiest saving if you’ll use more than one bottle. The third bottle is the same product from the same stock.
Related to T4 Levothyroxine liquid
- Clomiphene Citrate Liquid 40mg/mL (30mL), a SERM in a 30mL bottle
- GW501516 Cardarine Liquid 10mg/mL (30mL), a PPAR-delta agonist in a 30mL bottle
- LGD-4033 Liquid 10mg/mL (30mL), a SARM in a 30mL bottle
- Raloxifene Liquid 60mg/mL (30mL), a SERM in a 30mL bottle
- MK-677 Ibutamoren Liquid 25mg/mL (30mL), a GH secretagogue in a 30mL bottle
See every bottle we stock on our research liquids page, and the bulk options on our bulk research liquids page.
T4 Levothyroxine liquid FAQ
How much is in the T4 Levothyroxine liquid bottle?
30mL of solution at 400mcg/mL, which is 12,000mcg in total. The amount is printed on the label.
Is T4 Levothyroxine liquid in stock?
Yes, T4 Levothyroxine liquid is in stock now and ready to ship.
Is there a COA for T4 Levothyroxine liquid?
Yes. Each batch has a certificate of analysis filed under the batch number on the label. Email us that number and we’ll send it.
Is there a deal for buying more than one?
Yes. Choose Buy 2 Get 1 Free to get three bottles for the price shown in the dropdown.
Does T4 Levothyroxine liquid need mixing?
No. It’s already a solution in a dropper bottle, so there’s no powder to reconstitute.
Buy T4 Levothyroxine liquid from Blue Sky Peptide
Order T4 Levothyroxine liquid now for $24.67. It’s in stock, and checkout takes about two minutes.
Need more for the same project? See the rest of our research liquids.
For laboratory research use only. Not for human or veterinary use. Not evaluated by the FDA.
Reviews
There are no reviews yet.