Clinical Tools

Clinical tools, built on published data.

Free reference tools for aesthetics dosing and for clinical assessment — peels, microneedling, fillers, retinol, laser and Botox alongside dermatome, carpal tunnel, fall risk, and cognitive screening references. Sourced from peer-reviewed research, published instruments, and FDA labelling.

Aesthetics calculators

Dosing, depth, and protocol tools for injectables, peels, and energy devices — built from FDA labelling and peer-reviewed dermatology literature.

SkincareFree calculator

Chemical Peel Calculator

Compare glycolic, salicylic, lactic, mandelic, TCA, Jessner's and phenol peels by depth, downtime, and Fitzpatrick suitability.

Open calculator →5 FAQs
SkincareFree calculator

Microneedling Depth Calculator

Clinical needle depth protocols from 0.25mm to 2.5mm, map your concerns to the right layer, frequency, and setting (home vs clinic).

Open calculator →5 FAQs
InjectablesFree calculator

Dermal Filler Volume Calculator

Plan HA filler volume across 8 facial areas with published clinical dosing data, vascular risk flags, and enhancement goal adjustment.

Open calculator →5 FAQs
SkincareFree calculator

Retinol Concentration Calculator

Age-decade retinol protocols from 0.01% to 1% — start concentration, target concentration, ramp-up frequency, and results timeline.

Open calculator →5 FAQs
Energy DevicesFree calculator

Laser Hair Removal Session Calculator

Predict session count and recommended laser type (Alexandrite, Diode, Nd:YAG) from Fitzpatrick type, hair colour, area, and PCOS status.

Open calculator →5 FAQs
InjectablesFree calculator

Botox Unit Calculator

FDA-approved and off-label Botox dosing across 9 facial areas with muscle mass adjustment and the Allergan 'Look of 3' benchmark.

Open calculator →5 FAQs

Clinical assessment references

Scored screening tools and examination references for allied health and clinical practice — the same structured inputs Zdrovia captures as Smart Blocks in a chart.

Neuro & SpineFree clinical reference

Dermatome Map

Every spinal level from C2 to S5 with its ASIA key sensory point, dermatome distribution, matched myotome, and deep tendon reflex.

Open reference →6 FAQs
OrthopaedicFree clinical reference

Phalen's Test

Compare Phalen's, reverse Phalen's, Tinel's sign, carpal compression, and the hand elevation test by technique, positive finding, and reported accuracy.

Open reference →6 FAQs
Falls & SafetyFree scored tool

Morse Fall Scale Calculator

Score fall history, secondary diagnosis, ambulatory aid, IV access, gait, and mental status for an instant total and risk band.

Open calculator →6 FAQs
CognitiveFree interpretation guide

MoCA Score Interpretation

Enter a MoCA total and years of education to see the adjusted score, the corresponding band, and what the result does and does not establish.

Open guide →6 FAQs
Neuro & SpineFree clinical reference

Kernig's Sign

Kernig's, Brudzinski's, nuchal rigidity, and jolt accentuation compared by technique, positive finding, and reported accuracy.

Open reference →6 FAQs
Falls & SafetyFree scored tool

Modified Barthel Index Calculator

Ten ADL items scored across five levels of assistance, weighted to a total out of 100 with the matching dependence band.

Open calculator →6 FAQs
Falls & SafetyFree clinical reference

Palliative Performance Scale

All eleven PPS levels from 100% to 0% across ambulation, activity, self-care, intake, and consciousness.

Open reference →6 FAQs
OrthopaedicFree structured tool

PQRST Pain Assessment

Work through each letter of the PQRST framework and build a structured pain assessment note with a 0–10 severity rating.

Open tool →6 FAQs

Clinical reference tools for practitioners and patients

Zdrovia's clinical tools translate peer-reviewed literature and published assessment instruments into interactive references that help practitioners and patients make informed decisions. Each one is sourced from specific studies, FDA-approved labelling, established guidelines, or the original published instrument — with citations on every page. Where an instrument is copyrighted, we explain how to interpret a score and point you to the official source rather than reproducing it.

These tools are for educational and reference purposes only. They are not a substitute for a qualified practitioner's assessment, and no screening score is a diagnosis. Always consult a licensed healthcare provider before undergoing any treatment or acting on a result.