Pharmaceutical Calculations

Proof required

Submit your completed assessment (with all workings shown), the assessor's signature confirming the 100% score was achieved independently under observation, and a note of which calculation type was most challenging.

What gets checked

• Score is 100% — pharmaceutical calculations require zero errors; the assessment does not pass at lower scores.
• All five calculation types are represented in the assessment — IV rate and concentration calculations are often omitted.
• Workings are shown for all calculations — a correct answer without workings cannot be verified.

Common mistakes

• Assessment completed without a supervisor present — pharmaceutical calculations must be assessed under direct observation.
• Assessment limited to oral dose calculations only — IV and concentration calculations are required.
• Assessment passed at less than 100% — pharmaceutical calculations are a zero-error domain.

Resources

What a verifier looks for

• Confirm 100% score and independent supervised completion — pharmaceutical calculations have no acceptable error rate.
• Ask the student to demonstrate a concentration calculation from memory.
• Ask what the clinical consequence would be of a 10-fold calculation error in the most complex calculation type on the assessment.

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Proof required

Submit 5 anonymised calculation records with workings, results, and supervisor countersignatures. At least 3 different calculation types must be represented.

What gets checked

• All workings are shown for each calculation — the proof of competency is in the method, not the answer alone.
• Supervisor countersignature confirms the calculation was verified as correct.
• At least 3 different calculation types are represented.

Common mistakes

• Calculation records without workings — showing only the final answer does not demonstrate the calculation method.
• All 5 encounters using only oral dose calculations.
• Patient identifiers not fully anonymised.

Resources

What a verifier looks for

• Check that workings are shown for all 5 encounters — a correct answer without working cannot be verified.
• Ask the student to explain one calculation from memory in the clinical records.
• Verify that at least 3 different calculation types appear across the 5 records.

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Proof required

Submit your 2-page reflection countersigned by your registered clinical supervisor confirming it is based on a real case. All patient and staff identifiers anonymised.

What gets checked

• Error type is specific — 'a calculation error occurred' is not a reflection; the specific calculation type, the error magnitude, and the clinical context must be described.
• Harm analysis includes both actual harm and potential harm — many near-misses cause no actual harm but high potential harm.
• System change proposal is specific and implementable — 'be more careful' is not a system change.

Common mistakes

• Reflection based on a hypothetical or published case rather than a real clinical case — supervisor countersignature is required.
• Harm analysis that only describes the error without addressing the potential consequences.
• System change that places all responsibility on individual practitioners.

Resources

What a verifier looks for

• Confirm the supervisor countersignature states the reflection is based on a real clinical case.
• Ask the student what system change would have the greatest impact on preventing similar errors.
• Ask what the maximum safe dosing error margin would be for the medicine involved — tests clinical consequence awareness.

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