Days Supply From Quantity Directions Calculator
Actual supplied quantity/independently prescribed day directions, not choose dose; actual compatible definitions and matching units required, no causal efficacy/diagnosis or safety claim.
Description
Nominal days of supply divide the dispensed quantity by independently prescribed daily use in the same units.
Nominal days of supply divide the dispensed quantity by independently prescribed daily use in the same units.1
This tool performs that inventory calculation without inferring directions from free text.
When to use Days Supply From Quantity Directions Calculator
This tool performs that inventory calculation without inferring directions from free text.
How to use Days Supply From Quantity Directions Calculator and how it works
- Prepare dispensed quantity units, clinician ordered units per day, using the input definitions and matching units below.
- Enter the required fields and run Days Supply From Quantity Directions Calculator.
- Read result.value using the units, signs and ordering explained below.
- Correct any rejected inputs and rerun; interpret the result within the stated model and its assumptions.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualDispensedQuantityUnits | Actual Dispensed Quantity Units. Use the units and matching context stated in the calculation below. | number | Required; nonnegative; finite; other constraints below |
| callerClinicianOrderedUnitsPerDay | Caller Clinician Ordered Units Per Day. Use the units and matching context stated in the calculation below. | number | Required; strictly positive; finite; other constraints below |
Require nonnegative dispensed quantity and positive independently ordered daily use in matching units. Divide quantity by daily use and return nominal days without flooring. Directions are explicit numbers; the tool does not parse instructions or determine prescribed use.
days=quantityUnits/orderedUnitsPerDay Apply the input ordering, units and branch conditions stated above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Object containing the calculated or selected fields below. | object |
| result.value | Nominal days of inventory coverage under the established directions. | number |
{
"input": {
"actualDispensedQuantityUnits": 2,
"callerClinicianOrderedUnitsPerDay": 4
},
"output": {
"result": {
"value": 0.5
}
}
}Limitations and assumptions
Patient context, drug formulation, route, sampling time, assay units and applicable clinician-verified protocol must be independently established. The output supplies no dosing, titration, switching or administration instruction.
The calculation uses the supplied observations and model inputs. It does not collect measurements, select a reference population or coefficient, or establish that the model applies to the actual case. The stated branch conditions and output units remain part of the result.
All fields require explicit values. Unexpected fields, wrong types, nonfinite numbers and sparse arrays are rejected. Alignment, bounds and supported-token rules are explained above; extremely large inputs or nonfinite results can also fail. Input errors differ from successful false comparisons, unavailable-domain flags and empty match lists.
Alternative or Complementary methods
Use Tablet Days Supply Split Calculator for a complementary operation: Splitting a tablet changes the number of available pieces, which affects an inventory's nominal days of supply.
Use Refills Until Next Fill Calculator for a complementary operation: Inventory coverage and the time until a next fill are separate quantities that can be compared on a calendar.
References
Similar or alternative tools
- Tablet Days Supply Split Calculator
Splitting a tablet changes the number of available pieces, which affects an inventory's nominal days of supply.
- Refills Until Next Fill Calculator
Inventory coverage and the time until a next fill are separate quantities that can be compared on a calendar.