Tosoh ST AIA-PACK Free T4 (FT4) Reagent — 100 Tests, AIA-360 / 600 II / 900 (Cat. No. 0025268)

What is it:

The Tosoh ST AIA-PACK FT4 reagent is a genuine Tosoh unit-dose immunoassay test cup kit used to quantitatively measure non-protein-bound (free) thyroxine (FT4) on Tosoh AIA analyzers.

Part numbers:

• Cat. No.: 0025268
• Also searchable as (previous Tosoh part numbers): 025268, 25268

What it's used for:

FT4 is a core thyroid function marker, run alongside TSH to assess thyroid status and monitor hypothyroidism, hyperthyroidism, and thyroid replacement therapy. Because it measures the unbound hormone fraction, it's less affected by binding-protein abnormalities than total T4.

What's included:

100-test kit (20 cups x 5 trays). Manufactured by Tosoh Corporation.

Compatible analyzers:

• Tosoh AIA-360
• Tosoh AIA-600 II
• Tosoh AIA-900

Storage & shipping:

Contact us before ordering if you have a deadline — we'll confirm availability upfront so you know exactly when it'll arrive.

Why labs order from Transperify:

• ✅ Genuine Tosoh ST AIA-PACK reagent, correct Cat. No. guaranteed
• ✅ Transparent pricing — no login required to see cost
• ✅ Competitively priced (typically below major distributor list pricing)
• ✅ Fast, reliable U.S. fulfillment
• ✅ Easy reorder for routine thyroid panel testing

👉 Add to cart above, or browse our full [Tosoh AIA catalog] for more reagents, calibrators, and consumables.

Questions about compatibility or your reorder? 📩 customersupport@transperify.com

FAQs:

What does the ST AIA-PACK FT4 reagent measure?

It measures non-protein-bound (free) thyroxine (FT4) in human serum or heparinized plasma using Tosoh's AIA immunoassay platform.

How many tests are in one kit?

Each kit contains 100 tests (20 cups x 5 trays).

Which Tosoh analyzers is this compatible with?

The AIA-360, AIA-600 II, and AIA-900 systems.