Western blots, quantified the way the method requires.
Blotto measures each band as a slope across your exposure series — within its linear range, with saturated points excluded — so the number reflects how much protein is there, not which exposure you happened to pick.
You place the lanes and bands; the measurement that scores them is identical for every analyst. The calculation shown on every export.
Independent of any imaging vendor — one workflow for whatever hardware your lab runs.
Images are analyzed in your browser and never uploaded.
Got it — we'll be in touch personally. You can also reach us at nathan@leftbrainconsult.com.
We open access lab by lab. Request a code and we'll reach out personally — no automated sequences. When your slot opens, you'll have 14 days of full access to run your own blots.
Quantification is the part no one can check.
Western blots — immunoblots, more formally — are now held to a quantitative standard the analysis step was never built to meet, and the field knows it. A large share of published blots don't reproduce, journals increasingly treat densitometry with suspicion, and reviewers ask for the raw data behind a number. Yet in most labs the analysis is still taught hand to hand, one trainee to the next, and each pass tends to lose a detail. The PI sees finished figures and has to trust the work underneath them — right up until a reviewer asks how a band was measured, and there's no record to point to.
Two people ran the same blot and got different numbers. The afternoon went to working out why.
A reviewer asked how you handled background and saturation. The methods section didn't really answer it.
A new student needed three weeks to learn a quantification workflow that was never fully written down.
One path, from images to defensible numbers.
You decide where to look and what the result means. Blotto does the measuring — the same way, every time — and shows its work.
Step 3, made visible — the fit Blotto draws across the exposure series, with the saturated points it leaves out:
| Lane | Band | Slope | Linear range | Points used | Status |
|---|---|---|---|---|---|
| 1 | 1 | 142.7 | exp 1–4 | 4 | linear |
| 1 | 2 | 38.4 | exp 3–6 | 4 | linear |
| 2 | 1 | 291.0 | exp 1–3 | 3 | 2 points excluded — ceiling |
Standardized, and shown — not asserted.
Blotto's measurement is anchored to the approach the field increasingly treats as the rigorous one — quantify within the linear range, fit a slope across a dilution or exposure series, with recognized background subtraction — computed on the full-bit-depth data, never the image on your screen. It runs identically for every analyst and every blot, on whatever imager produced the file, and every number arrives with the steps that produced it.
And because Blotto isn't sold by the company that made your imager or your reagents, the analysis isn't grading its own homework.
That's the difference between a number a reviewer has to trust and one they can check.
What Blotto is — and isn't.
We're validating accuracy before we claim it.
A more elaborate method can be more wrong while looking more rigorous. The only honest test is to measure known ratios — a dilution series at 1×, 2×, 4×, 8× — and check that the tool recovers them. That's the same dilution-series logic the field points to as the standard for quantitative blotting, and we hold our own method to it before claiming anything.
We're running that validation now, with a small number of independent labs. Until it's done, we make no best-in-class accuracy claim. What's real today is standardization, transparency, and a defensible record — worth having on their own, whatever the accuracy work returns.
Run your blots the right way — with a record that holds up.
Early access is free and opens lab by lab. Request a code; when your slot opens you'll have 14 days of full access to run your own blots.
Got it — we'll be in touch personally. You can also reach us at nathan@leftbrainconsult.com.
We reach out personally. No automated sequences.