VectoMeter
Read p24 lateral-flow strips into a consistent signal, and keep your lentivirus lots, reads, and aliquots in one place.
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What VectoMeter does
You photograph a p24 lateral-flow strip; the app measures the Test and Control bands and returns one consistent number. Optionally calibrate it against your own standards, then keep every lot, read and aliquot in one place. Research use only.
1. Photograph the strip
Point your phone or webcam at the cassette, or drop in an image you already have. The app finds the strip, straightens it, and places boxes on the Test and Control bands — you confirm or nudge them. A flat, in-focus strip under even light gives the most repeatable read.
2. It measures the bands
The app reads band darkness against the local background inside each box and computes the Test:Control ratio as one relative signal — the CSLV. CSLV lets you compare reads taken the same way; it is not a titer, and not an infectious (IFU/TU) titer. The math is deterministic: the same image always returns the same number.
3. Calibrate to your standards (optional)
Read a dilution series of a p24 standard once and VectoMeter fits a curve for that strip lot. After that, in-range reads on the same lot can show an estimated p24 concentration next to the raw signal. Out-of-range or lot-mismatched samples stay signal-only — the estimate is blocked, not extrapolated. A p24 estimate is a physical amount, still not a functional titer.
4. Track lots, reads and aliquots
Every read is saved to its lot with the image, the boxes you used, operator, strip lot and date — so you can reproduce or audit it later. Track aliquots and volumes in inventory, run harvest and incubation timers, and export a report. None of this is for lot release or clinical decisions.
Every read is saved to its lot with the image and the boxes used.
For Research Use Only. Not for use in diagnostic procedures. CSLV is a relative p24 optical signal, not a validated titer; any p24 estimate is calibration-dependent. For dosing or MOI, use a functional (IFU/TU) titer from a transduction assay.