Clicks to micrograms

Last reviewed: June 2026

Every Veyvora pen is a pre-filled 3 mL barrel that delivers 300 clicks, so the amount per click is the pen’s total divided by 300. The converter on this page works that out for every pen and runs the conversion both ways: a target amount to a whole number of clicks, and a number of clicks back to an amount. This page also explains how a laboratory confirms a pen’s labelled units and batch documents before recording a click-derived value in a research protocol. It covers how the per-click amount is calculated, which records are present and internally consistent before you record that value, and which unit controls prevent transcription errors. This is unit-conversion maths for laboratory solution preparation. A click value applies to your material when the physical pen, product label, device specification and batch-specific certificate of analysis (CoA, a document confirming the composition and purity of a specific production lot) all refer to the same product and lot; where those records disagree, resolve the difference before relying on the figure.

A pen click is a mechanical increment defined by a specific device. The click count, reservoir volume and labelled content are separate attributes, each read from its own record. The geometry of one device belongs to that device, even where another appears identical.

This reference helps a researcher check whether the required records are present and internally consistent. Delivered mass, analytical purity, identity, sterility, biological activity and suitability for a particular experiment are covered by the batch documents, analytical methods and laboratory procedures that address each of them.

Take the per-click figure for each pen from its own label and specification, strength by strength and compound by compound.

Keep the source unit unchanged until the final documented conversion step. Milligrams, micrograms and international units (IU) are distinct units. A value expressed in IU rests on a product-specific basis and converts to mass only through an authoritative conversion for that exact substance and reference standard, because IU definitions vary by substance and reference preparation.

Use SI (International System of Units) symbols consistently and retain enough decimal places to show the unrounded result. The UK National Physical Laboratory’s SI units guidance is an appropriate reference for unit symbols. Apply the laboratory’s approved rounding rule only after the calculation has been independently checked.

The following controls prevent common transcription errors:

• Retain the labelled total, click count and unit as separate fields.
• Record the formula rather than only the result.
• Flag any unit mismatch before calculation.
• Take values from the product’s own record rather than from sibling products or other markets.
• Have a second person check any value used in an experimental record.
• Preserve the unrounded result alongside the stated rounding method.

This page provides the per-click reference table for every pen and both conversion directions — target amount to clicks, and clicks to amount — all built on the same arithmetic: pen total (mg) × 1000 ÷ 300. It is a unit-conversion reference for laboratory solution preparation, so schedules, injection volumes and administration examples sit outside its scope.

Veyvora’s root-market pen pages are commercial product records for research materials. The BPC-157 + TB-500 research pen and the Tesamorelin research pen are each checked against their own current label and batch documentation, because each pen carries its own device geometry, labelled content and lot-specific CoA.

This reference is unit-conversion arithmetic for in-vitro laboratory research: preparing working solutions for cell-culture, receptor-binding and analytical reference work. Not for human or veterinary use.