Strength selection hub for research-grade Tirzepatide (LY3298176): stocked in 10 mg, 20 mg and 40 mg lyophilised vials. Compare vial presentations, working concentrations and reconstitution planning at a glance.
BuyRetaUK supplies Tirzepatide (LY3298176) in three lyophilised vial strengths: 10 mg, 20 mg and 40 mg. Each strength is manufactured under a single release framework, tested by reversed-phase HPLC-UV for purity and ESI-MS for identity, and released against the same ≥99% area-percent specification. The strength on the vial defines the total peptide mass; the working concentration is set at the bench by choosing an appropriate reconstitution volume.
Every batch resolves to a batch-specific Certificate of Analysis in the public verification library, indexed by the batch number printed on the vial label. Strength selection is therefore independent of quality — quality is invariant across the stocked strengths — and is driven by laboratory planning considerations covered below.
Every vial ships with a batch-specific COA · UK dispatch
Strength selection is a planning decision, not a dosage recommendation. The relevant inputs are the total peptide mass a protocol requires, the reconstitution volume the laboratory prefers to standardise on, and the working concentration needed at the bench. Because working concentration is a function of vial strength divided by reconstitution volume, several combinations can produce the same result — the reconstitution calculator translates strength and volume into concentration for any target workflow.
| Strength | Price | Profile | Laboratory note |
|---|---|---|---|
| 10 mg | £60 | Entry vial for short workflows, method-development runs or laboratories evaluating tirzepatide against comparators. | Smaller reconstitution volumes deliver higher working concentrations from a single vial. |
| 20 mg | £80 | Mid-range vial suited to routine multi-well or multi-plate laboratory experimentation. | Balances working-solution longevity with reduced freeze-thaw exposure per vial. |
| 40 mg | £120 | Highest stocked strength for sustained workflows and larger-scale in-vitro programmes. | Consolidates a research programme onto fewer batches, simplifying batch-to-batch reconciliation. |
All stocked strengths share the same ≥99% HPLC-UV release specification and batch-specific Certificate of Analysis. Prices are per vial and subject to change; confirm on the product page.
| Research scenario | Recommended | Rationale |
|---|---|---|
| Entry vial for short workflows, method-development runs or laboratories evaluating tirzepatide against comparators. | Tirzepatide 10 mg — £60 | Smaller reconstitution volumes deliver higher working concentrations from a single vial. |
| Mid-range vial suited to routine multi-well or multi-plate laboratory experimentation. | Tirzepatide 20 mg — £80 | Balances working-solution longevity with reduced freeze-thaw exposure per vial. |
| Highest stocked strength for sustained workflows and larger-scale in-vitro programmes. | Tirzepatide 40 mg — £120 | Consolidates a research programme onto fewer batches, simplifying batch-to-batch reconciliation. |
Regardless of strength, every BuyRetaUK Tirzepatide vial is manufactured to the same synthesis and release framework. Release testing combines reversed-phase HPLC-UV for purity, ESI-MS for identity, and — where relevant — Karl Fischer moisture determination and endotoxin testing. The methodology and acceptance criteria are documented on the laboratory quality page.
Reverse-phase HPLC quantifies purity as a percentage of total peak area. Release specification: ≥99%.
Learn more →Certificate of AnalysisEvery batch ships with a batch-specific COA reporting identity, purity and appearance.
Learn more →Laboratory QualityIndependent third-party analysis, temperature-controlled UK storage and full batch traceability.
Learn more →Batch VerificationCross-reference the batch number printed on your vial against our live COA library.
Learn more →Storage StandardsLyophilised at 2–8°C protected from light. Reconstituted stability ~30 days at 2–8°C.
Learn more →Every stocked Tirzepatide vial is released with a batch-specific Certificate of Analysis that reports identity, HPLC-UV purity, appearance and, where determined, moisture and endotoxin. Batch numbers on the vial label resolve to their COA in the public verification library. The anatomy of a COA is covered in the Certificate of Analysis guide.
Choose the vial mass that covers your total workflow with the fewest batch changes.
Fix a reconstitution volume across a study so working concentration scales predictably with strength.
Regardless of strength, resolve the vial's batch number in the verification library before use.
Aliquot reconstituted material to minimise freeze-thaw cycles — larger vials benefit most from disciplined aliquoting.
BuyRetaUK stocks Tirzepatide in three lyophilised vial strengths: 10 mg, 20 mg and 40 mg. All three share the same ≥99% HPLC-UV release specification and mass-spectrometric identity confirmation, and each ships with a batch-specific Certificate of Analysis.
Not currently. The stocked catalogue is 10 mg, 20 mg and 40 mg. Researchers requiring a specific working mass can select the nearest stocked strength and standardise the reconstitution volume — the reconstitution calculator handles the arithmetic.
No. Every Tirzepatide strength is released against the same analytical specification. The vial label carries the batch number; the batch COA in the verification library documents the release purity and identity result.
Strength selection is a laboratory-planning decision. Consider the total mass your protocol requires, the reconstitution volume you plan to use, the working concentration you need at the bench, and how quickly the reconstituted material will be consumed.
Not by itself. Working concentration is set by the ratio of vial strength to reconstitution volume. A 40 mg vial reconstituted in 4 mL produces the same concentration as a 10 mg vial reconstituted in 1 mL.
It is the same INN (tirzepatide, LY3298176) but a different product category. Mounjaro and Zepbound are Eli Lilly branded prescription medicines. BuyRetaUK supplies research-grade tirzepatide for in-vitro laboratory use only.
Peer-reviewed citations are added as each article is expanded. See our editorial standards for our sourcing and accuracy commitments.
The BuyRetaUK editorial team publishes laboratory-focused reference content on research peptides, analytical methods and Certificates of Analysis. All articles are written for in-vitro research contexts only.
View profile →Every editorial article is reviewed against our accuracy commitment and quality-assurance checklist before publication. Named reviewer profiles are added as our reviewer network expands.
View profile →Every article follows a documented editorial process — sourcing, scientific review, update cadence and correction policy — so researchers can rely on what we publish.
Read the full editorial standards →Educational first. Each step is optional — start wherever you are in your research.
Dual GIP/GLP-1 receptor overview and research framing.
How dual receptor engagement drives the incretin response.
Published evidence base, SURPASS & SURMOUNT programmes, laboratory applications.
Phase 3 SURPASS & SURMOUNT read-outs and the peer-reviewed literature.
Dual vs triple incretin agonist — how they differ.
HPLC purity and Certificate of Analysis verification.
Lyophilised storage, bacteriostatic water reconstitution, in-use stability.
Every tirzepatide vial strength available.
UK commercial hub — lab data, COAs and dispatch.
Triple vs dual incretin agonist — receptor profile and research framing.
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View comparison →Every batch of Tirzepatide ships with a third-party HPLC and mass-spec Certificate of Analysis. Browse the live COA library to verify your lot.
Triple vs dual incretin receptor profile — the canonical side-by-side.
View comparison →CommercialTirzepatide UKThe UK commercial hub — buying, dispatch and quality documentation.
Open commercial hub →CatalogueTirzepatide catalogueAll stocked vials with live pricing and add-to-cart.
Browse catalogue →
