ResearchVerify

When more than one lab tests the same batch, we line up their results side by side. When they match, it is the strongest signal you can get. When they do not, that is information too. Here is what these labs found — you decide.

2 independent labs tested this batch of Tirzepatide from MIX Peptides. Their purity results ranged from 99.4% to 100.0%.
The labs agree

Independent labs landed within 2 points of each other on purity. That is the strongest signal you can get on a batch.

On the actual amount per vial, the labs were close (52.1 to 65.0 mg).

⚠ Mild disagreement · Poor · 5.5

The two badges above are our blended RV-score view: whether the scores agree, and the overall quality tier. The plain read at the top leads with the labs actual purity numbers, and the full per-lab table is below.

Tirzepatide from MIX Peptides
vendor batch label "2025A512-10" · cross-tested by 2 independent labs

Labs differ by 1.5–3 points. May indicate batch variation, method differences, or test timing.

ⓘ Batch identity basis: Vendor-claimed batch: '2025A512-10'
Grouped by the vendor's batch label. We don't independently verify lot identity — if multiple physical lots were sold under this label, they'd be lumped together here. Use the agreement signal with appropriate caution.
🧞 Identity caveat — Similar hydrophobicity/MW to Retatrutide (~4813 vs ~4731 Da) — distinct compound, never merge.
Method-driven variation — explainable. Labs in this group used different analytical methods (HPLC vs LAL). Variation between them is plausibly attributable to method choice, not a quality concern by itself. Same compound measured different ways will not always agree to within method noise.
Labs
2
Tests
4
1 unparsed
RV Score Mean
5.47
RV Score Spread
2.02
Content Mean
60.4 mg
Content moderate
Content Range
52.1–65.0 mg
CV 9.8%

Per-Lab Breakdown

All rows (Purity & Content vary, everything else constant): CI 10.0
LabTaskTest DateRVPurityContentTestingLabelCustodyCIMethod
Janoshik#846356.0899.45%64.2 mg3.19.05.710.0not stated by lab
Janoshik#897646.0899.87%65.0 mg3.19.05.710.0not stated by lab
Janoshik#897684.06——0.07.04.810.0LAL
Krause Analytical#FNR-nc3x6we5.6599.95%52.1 mg3.18.54.310.0HPLC

Unparsed records (1) — excluded from agreement math

LabTaskTest DateStatus
Janoshik#897652025-11-21unparseable — excluded from agreement math

These records lack parseable score, purity, and content fields. They're shown here for transparency but don't contribute to the cross-lab agreement statistics above.

Why this matters: A single COA is one lab's answer from one method on one sample. Multiple labs reveal the pattern. When labs converge on the same answer, that's strong cross-validation. When they diverge — especially on content while agreeing on purity — the difference is often method-driven (different quantitation basis) but sometimes signals real product variation. ResearchVerify is the only platform that surfaces both cases automatically across thousands of cross-tests.