Neurology · ICU and Critical Care

GCS-Pupil (GCS-P) Score calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Glasgow Coma Scale total (3–15)

points

Allowed range: 3–15 points

Pupil reactivity to light

Result

2 fields remaining

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Professional use only

For qualified clinicians. Independently verify inputs, calculations, source guidance, and applicability before any clinical action. This calculator does not replace clinical judgment.

Source: Brennan PM, Murray GD, Teasdale GM. Simplifying the use of prognostic information in traumatic brain injury. Part 1: The GCS-Pupils score: an extended index of clinical severity. J Neurosurg. 2018;128(6):1612-1620. DOI: 10.3171/2017.12.JNS172780. PMID: 29631516. Scope: GCS-P = GCS score (3–15) minus the number of non-reacting pupils (0, 1 or 2); range 1–15. Lower GCS-P is associated with worse 6-month outcome across the whole range (e.g. GCS-P 1: 74% mortality, 90% unfavourable outcome; GCS 3: 51% and 70%). The paper does not define mild/moderate/severe GCS-P categories, so the result is shown as a single score. (2018)

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Clinical inputs

Glasgow Coma Scale total (3–15) (points)Accepted range: 3 to 15
Pupil reactivity to light

Primary source

Brennan PM, Murray GD, Teasdale GM. Simplifying the use of prognostic information in traumatic brain injury. Part 1: The GCS-Pupils score: an extended index of clinical severity. J Neurosurg. 2018;128(6):1612-1620. DOI: 10.3171/2017.12.JNS172780. PMID: 29631516. Scope: GCS-P = GCS score (3–15) minus the number of non-reacting pupils (0, 1 or 2); range 1–15. Lower GCS-P is associated with worse 6-month outcome across the whole range (e.g. GCS-P 1: 74% mortality, 90% unfavourable outcome; GCS 3: 51% and 70%). The paper does not define mild/moderate/severe GCS-P categories, so the result is shown as a single score. (2018)

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