Trap · limit boundary · patient PT013

A dose exactly at the limit

A daily dose equal to the maximum is within it. Flagging it is a false alarm on a correct order.

The patient's rows

Exactly what the agent sees for PT013, copied from the chart. The value this mistake misreads is underlined.

patients.csv

patient_id	age_years	sex	weight	weight_unit
PT013	70	F	60	kg

labs.csv

patient_id	creatinine	creatinine_unit	collected_at
PT013	0.9	mg/dL	2026-10-31T04:21

meds.csv

order_id	patient_id	drug	dose_mg	frequency	start_time	status
RX4803	PT013	Bremazotan	500	OD	2026-10-21T09:11	active
RX9491	PT013	Exalmizide	250 (the value this mistake misreads)	QDS	2026-10-18T12:40	active

Two readings of the same rows

Every step is shown. Where the careless reading goes wrong, the value is underlined.

What a careless agent computes

Flags daily dose ≥ limit, where the instruction says strictly greater.

Weight: 60 read as kg → 60 kg
Creatinine: 0.9 mg/dL (2026-10-31T04:21) read as mg/dL → 0.90 mg/dL
CrCl: (140 − 70) × 60 ÷ (72 × 0.90) × 0.85 = 55.1 mL/min

Order	Daily dose	Limit	Flagged
RX4803Bremazotan	500 × 1 = 500 mg	400 mgCrCl ≥ 50	yes
RX9491Exalmizide	250 × 4 = 1000 mg	1000 mgCrCl 35-70	yes (the value this mistake misreads)

Output line: {"crcl_ml_min":55.1,"flagged_order_ids":["RX4803","RX9491"]}

The correct answer

Reads the unit, status, frequency and time columns as the instruction says, and flags only a daily dose strictly over the band's limit.

Weight: 60 read as kg → 60 kg
Creatinine: 0.9 mg/dL (2026-10-31T04:21) read as mg/dL → 0.90 mg/dL
CrCl: (140 − 70) × 60 ÷ (72 × 0.90) × 0.85 = 55.1 mL/min

Order	Daily dose	Limit	Flagged
RX4803Bremazotan	500 × 1 = 500 mg	400 mgCrCl ≥ 50	yes
RX9491Exalmizide	250 × 4 = 1000 mg	1000 mgCrCl 35-70	no

Output line: {"crcl_ml_min":55.1,"flagged_order_ids":["RX4803"]}

The test that catches it

The careless output, graded by the task's real test file. This is what pytest printed.

Flagged set exact · PT013test_flagged_orders_exact[PT013]

AssertionError: PT013: flagged ['RX4803', 'RX9491'] vs expected ['RX4803']

tests/test_outputs.py

@pytest.mark.parametrize("pid", PATIENT_IDS)
def test_flagged_orders_exact(by_patient, pid):
    assert pid in by_patient, f"no output for {pid}"
    got = by_patient[pid].get("flagged_order_ids")
    assert isinstance(got, list)
    assert set(got) == set(EXPECTED[pid]["flagged_order_ids"]), \
        f"{pid}: flagged {sorted(got)} vs expected {EXPECTED[pid]['flagged_order_ids']}"

No other patient's answer moves under this mistake, so this one failure is the whole signal.