post #2 is right about the mechanism and I think understates the practical bit.
Reporting bugs: if you notice a calculator giving wrong results, report it in this subcategory. Bugs are fixed when identified.
post #2 is right about the mechanism and I think understates the practical bit.
Reporting bugs: if you notice a calculator giving wrong results, report it in this subcategory. Bugs are fixed when identified.
This follows post #6 rather than contradicting it.
Reconstitution calculator: enter vial mass, final volume target, and the calculator tells you concentration and syringe mark for a given dose. Useful for double-checking arithmetic when you are doing it by hand.
I read post #44 twice before replying, because I had assumed the opposite.
Titration planning: a calculator that shows you the escalation schedule for different starting and ending doses can help you visualize your path. Actual path might be slower or adjusted for tolerability.
Precision and significant figures: the calculators do not round to match your input precision. If you input values to one decimal place, the output might have more. Use significant figures appropriate to your input precision.
Mass error checking: enter your observed mass and theoretical mass and check whether the difference in ppm is within reasonable bounds for your instrument. Useful sanity check on LC-MS results.
The calculators maintained on this site are open-source and verifiable. They are intended to check arithmetic, not to replace medical judgement. Using them is optional and they are provided for convenience.
Read the full topic (84 posts)
| Topic | Participants | Replies | Views | Activity |
|---|---|---|---|---|
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Validating a calculator against hand arithmetic
Validating a calculator against hand arithmetic Writing it up because I had to work it out twice and would rather nobody else did. Working through the identity arithmetic and I would like it checked.…
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+17 | 21 | 12k | 3mo |
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Validating a calculator against hand arithmetic — what changed since
Posting this under the heading it deserves: Validating a calculator against hand arithmetic — what changed since Everything below is what sits behind that. Working through the identity arithmetic and I would…
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+121 | 137 | 21k | 13mo |
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Bug report: the reconstitution calculator and a rounding edge case
Bug report: the reconstitution calculator and a rounding edge case — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would like it checked.…
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+68 | 72 | 28k | 4mo |
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Follow-up: Bug report: the reconstitution calculator and a rounding edge case
On the subject in the title: Bug report: the reconstitution calculator and a rounding edge case Working notes rather than a conclusion. Working through the identity arithmetic and I would like it checked.…
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+58 | 63 | 24k | 5mo |
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The mass-error checker and its intended scope
The mass-error checker and its intended scope Writing it up because I had to work it out twice and would rather nobody else did. Working through the identity arithmetic and I would like it checked.…
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+149 | 167 | 42k | 2y |
| Topic | Participants | Replies | Views | Activity |
|---|---|---|---|---|
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Fixed versus detachable needles: the trade-offs
Posting this under the heading it deserves: Fixed versus detachable needles: the trade-offs Everything below is what sits behind that. I have read the maintained page on this and I still have a gap, so I am…
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+117 | 121 | 7.3k | 18mo |
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Converting between mg/mL and units per dose, both directions
Posting this under the heading it deserves: Converting between mg/mL and units per dose, both directions Everything below is what sits behind that. Practical question with the units stated, because I have…
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+106 | 142 | 9.5k | 19mo |
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Tag proliferation and whether we should prune
On the subject in the title: Tag proliferation and whether we should prune Working notes rather than a conclusion. Process question about how this site works. I have read the guidelines and the trust-level…
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2 | 11k | 11mo | |
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Aggregated purity results across four services, with caveats — a second dataset
Aggregated purity results across four services, with caveats — a second dataset — setting out what I have, and where I think it stops being reliable. Working through the identity arithmetic and I would like…
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+127 | 151 | 42k | 10mo |
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About the Syringes & needles category
Insulin syringe graduations, dead volume, gauge and length selection, and reading units correctly. This post is a community wiki: any member at trust level 3 or above can edit it, and every edit is recorded…
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4 | 45k | 1mo |