FA-64329 / Medication dosing calculations / Member archive

Single-level extended-interval nomogram: nomogram window bounds · case 04

Levels drawn exactly 6 or 14 hours after the dose are rejected.

Member previewVariant 4 · 3 implementations · 7 checks per implementation

Case contract

Input {dose "HH:MM", draw "HH:MM" (a draw clock time earlier than the dose means the next day), level mg/L}. Hours after dose must be within 6-14 inclusive, else OUT_OF_RANGE. With rem = 14 - hours: level <= 2 + rem/2 gives q24h; <= 4 + 0.75*rem gives q36h; <= 6 + rem gives q48h; otherwise HOLD_RECHECK. Return {interval, hours (2 dp)}.

Why this case matters

Interval nomograms read a timed level against sloped lines; clock arithmetic and line edges are separate defect sites.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
exactly 6 hours	`{"hours": 6.0, "interval": "OUT_OF_RANGE"}`	`{"hours": 6.0, "interval": "q36h"}`	Failed

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