Nephrology Calculators & Clinical Tools

⌕

Dialysis Adequacy & Fluid

Daugirdas

Dialysis Adequacy — spKt/V & URR

Single-pool Kt/V, URR, and ultrafiltration rate.

Open →

Prescription

Dialysis Prescription Calculators

RKF, spKt/V, UF rate, nPCR, and weekly PD Kt/V.

Open →

Fluid

Interdialytic Weight Gain & Fluid

Weight gain, fluid allowance, and UF-rate estimate.

Open →

UFR · Flythe

Ultrafiltration Rate (UFR) — Max Safe UF

UFR (mL/kg/h), risk band, and max safe UF volume at the ≤10 target and ≤13 ceiling.

Open →

New · Patient-specific

UFR Ceiling — Patient-Specific Limit

Mean UFR vs 13 (or 10 in cardiac fragility) mL/kg/hr threshold + minimum session time to stay under it.

Open →

New · Na · Profiling

Dialysate Sodium Balance — TAD-Na & Salt Loading

Time-averaged dialysate Na vs pre-HD plasma Na with net-zero diffusive Na flag — for sodium-ramping prescriptions.

Open →

TMP · FF

Dialysis Kinetics — TMP & Filtration Fraction

Transmembrane pressure from the four dialyzer pressures, and filtration fraction for post-/pre-dilution HDF.

Open →

ISPD 2020 · PD

PD Adequacy — Weekly Kt/V & CrCl

Total weekly Kt/V (≥1.7) and creatinine clearance (≥45 L/1.73m²), peritoneal + residual renal.

Open →

BIS · Clinical

Dry Weight & Target Weight Estimator

Estimate target weight and fluid to remove by bioimpedance (OH) or clinical method, with UF-rate check.

Open →

PD · Glucose Load

PD Glucose Absorption & Caloric Load

Dextrose absorbed and kcal/day from PD fluid — relevant to diabetes, weight, and lipids.

Open →

Combined · Daugirdas

HD Adequacy + nPCR (Kt/V · URR · nPCR)

spKt/V, URR, nPCR and UF rate from one pre/post-dialysis urea draw.

Open →

Apheresis · TPE

Plasma Volume & TPE Exchange Volume

Estimated plasma volume and 1–1.5 PV exchange volume with % macromolecule removal — for plasmapheresis.

Open →

New · Water Treatment · Facility

Water Treatment Capacity & RO Sizing

Peak water demand from station count and modality mix, design margin, temperature derating, and a headroom verdict against your RO's rated capacity.

Open →

New · Water Treatment · Facility

Carbon Tank Empty Bed Contact Time

Media volume, tank count, and design flow to Empty Bed Contact Time, checked against the ≥6-minute chloramine-breakthrough threshold.

Open →

New · Water Treatment · Facility

Water Softener Sizing & Regeneration

Source hardness, daily volume, and resin capacity to days-between-regenerations, with a duplex-softener recommendation when the interval is impractical.

Open →

New · Water Treatment · Facility

RO Recovery & Dual-Pass Reject Volume

Feed flow and pass recovery percentages to permeate/reject volumes and combined overall recovery for single- or dual-pass RO.

Open →

WTS · Troubleshoot · Algorithm

Low Product-Water Flow (WTS §9.4.2)

Step-by-step troubleshooting algorithm for low RO/dialysis product-water flow — pretreatment, membrane fouling, and pressure checks.

Open →

Kidney Transplant

KDPI · KDRI

KDPI & KDRI — Donor Quality

Kidney Donor Risk Index → KDPI percentile (Rao/OPTN); deceased-donor quality for allocation & consent.

Open →

EPTS · Allocation

EPTS — Post-Transplant Survival

Estimated Post-Transplant Survival; EPTS ≤20% earns longevity-matched (KDPI ≤20%) offers.

Open →

Living Donor · ESRD

Living-Donor ESRD Risk

Baseline pre-donation kidney-failure risk factors for living-donor evaluation & counseling.

Open →

Tacrolimus · TDM

Tacrolimus Dosing & Target Trough

Weight-based starting dose (IR / ER / Envarsus) and target whole-blood trough by time post-transplant.

Open →

DGF · Risk

Delayed Graft Function Risk

Weighted donor/recipient factors → DGF risk tier; cold ischemia, DCD, donor quality, sensitization.

Open →

Fluids, Electrolytes & Acid–Base

Acid–Base

Anion Gap & Acid–Base

Anion gap, corrected AG, delta ratio, Winter’s pCO₂.

Open →

Hyponatremia

Hyponatremia Correction & Na-Rise Predictor

Predict Na⁺ rise from saline (3%/2%/NS) or NaCl/NaHCO₃ tablets, with rate & safe ceiling.

Open →

RTA workup

Urine Anion Gap

Differentiate GI bicarbonate loss from distal RTA in non-gap acidosis.

Open →

Potassium

Transtubular Potassium Gradient

TTKG to assess renal K⁺ handling in hyper-/hypokalemia.

Open →

Pre-renal vs ATN

FeNa & FeUrea

Fractional excretion of sodium and urea.

Open →

Osmoles

Serum Osmolality & Osmolal Gap

Calculated osmolality and osmolal gap.

Open →

Stewart · SIG

Strong Ion Gap (Stewart)

Physicochemical SIDa, SIDe & strong ion gap — detects occult unmeasured anions the anion gap misses.

Open →

Patient · Hydration

Am I Drinking Enough Water? — Urine Colour & Fluid Deficit

Daily water target by weight/sex, plus a urine-colour hydration check and fluid-deficit estimate.

Open →

Hypernatremia

Free Water Deficit

Free water deficit and replacement estimate.

Open →

IV Fluids

Maintenance IV Fluids & Comparison

Holliday-Segar maintenance rate plus an IV-fluid composition table.

Open →

Acidosis

Bicarbonate Deficit & Correction

HCO₃⁻ deficit and a cautious initial replacement dose.

Open →

Acid–Base

ABG Analyzer — Acid-Base Interpreter

Primary disorder, compensation (Winter's), anion gap & delta ratio.

Open →

Winters' Formula

Winters' Formula — Metabolic Acidosis

Expected PaCO₂ compensation and mixed-disorder detection in metabolic acidosis.

Open →

Repletion · K · Mg · PO₄

Electrolyte Repletion Dosing

Potassium, magnesium & phosphate replacement estimates with CKD-cautious dosing and monitoring notes.

Open →

Minerals · Anemia · Iron

Minerals, Anemia & Iron

CKD-MBD

CKD-MBD Lab Calculator

Ca×P product, corrected calcium, PTH target staging.

Open →

Payne

Corrected Calcium for Albumin

Albumin-corrected serum calcium with low/normal/high flag.

Open →

Ganzoni

Iron Deficit & IV Iron Dose

Total iron deficit and IV replacement dose.

Open →

TSAT

Iron Status — TSAT & Ferritin

Transferrin saturation and ferritin interpretation.

Open →

ESA Resistance

ESA Resistance Index (ERI)

Erythropoiesis-stimulating-agent resistance index.

Open →

EPO · KDIGO

ESA / EPO Dose Adjustment

Start ESA-naïve patients and titrate epoetin/darbepoetin to the Hgb 10–11.5 target.

Open →

IV Iron

IV Iron — Repletion / Maintain / Hold

Decision by TSAT & ferritin (HD vs ND-CKD) per KDIGO iron thresholds.

Open →

Reticulocyte · RPI

Reticulocyte Index (Corrected & RPI)

Corrected retic % and production index — distinguishes hypoproliferative CKD anemia from hemolysis.

Open →

Transfusion · ΔHgb

Transfusion Hgb Predictor

Δ Hgb ↔ RBC volume with age-banded blood volume, product Hct, infusion guidance & restrictive-threshold framing.

Open →

Cardiometabolic

Blood Pressure

MAP, Pulse Pressure & BP Target

MAP, pulse pressure, and CKD BP-target check.

Open →

Lipids

Lipid Panel Interpreter

LDL (Friedewald), non-HDL, and ratio.

Open →

Lipids · ACC/AHA 2026

Dyslipidemia Management Tool

2026 ACC/AHA dyslipidemia tool: PREVENT-based ASCVD risk, LDL-C targets, and personalized statin/non-statin recommendations with Philippine brand names.

Open →

Gout / ULT

Uric Acid Target & FEUA

Urate target, FEUA, and urate-lowering guidance.

Open →

SAMS · ACC 2022

Statin Intolerance & SAMS Aid

Triage muscle symptoms/CK; choose rechallenge or non-statin therapy.

Open →

HAS-BLED · Bleeding Risk

HAS-BLED Score

1-year major bleeding risk in AF patients on anticoagulation; identifies modifiable risk factors.

Open →

ACC/AHA · Heart Failure

ACC/AHA Heart Failure Staging

Stage A–D classification with NYHA cross-reference and cardiorenal syndrome guidance.

Open →

AHA · PREVENT

AHA PREVENT — 10-Year CV Risk

Total CVD, ASCVD & heart-failure risk for ages 30–79 — the kidney-aware score using eGFR and urine ACR.

Open →

AHA 2023

CKM Syndrome Staging Tool

Cardiovascular-Kidney-Metabolic stages 0–4 (incl. 4a/4b) with stage-specific management.

Open →

AF · Stroke Risk

CHA₂DS₂-VASc + Anticoagulation in CKD

Stroke risk in non-valvular AF with CKD-tailored DOAC dosing; pairs with HAS-BLED.

Open →

ADAG · Glucose

eAG ↔ HbA1c Converter

Convert HbA1c to estimated average glucose, with CKD/dialysis reliability caveats.

Open →

Combined · AF

AF Anticoagulation Decision (VASc + HAS-BLED)

CHA₂DS₂-VASc and HAS-BLED on one page with a net recommendation and CKD DOAC dosing.

Open →

ARR · Aldosteronism

Aldosterone-Renin Ratio (ARR)

Primary aldosteronism screen (PAC/PRA or PAC/DRC) for resistant/secondary hypertension workup.

Open →

FIB-4 · NAFLD

FIB-4 & NAFLD Fibrosis Score

Non-invasive liver-fibrosis triage (FIB-4 + NFS) for MASLD — fits the CKM/metabolic cluster.

Open →

ABI · PAD

Ankle-Brachial Index

Per-leg ABI for peripheral artery disease; flags non-compressible (calcified) vessels in diabetic CKD.

Open →

Endocrine & Glucose

Thyroid

TSH Interpreter in CKD

Interpret TSH in the context of kidney disease.

Open →

Thyroid

Subclinical Hypothyroidism Aid

Treatment decision aid for subclinical hypothyroidism.

Open →

Thyroid

Thyroid Screening Interval

Open →

Glucose

Sodium Correction for Hyperglycemia

Corrected serum sodium for hyperglycemia.

Open →

Diabetes

Insulin Dosing in CKD

CKD-adjusted starting dose, basal/bolus, ISF & carb ratio, correction dose.

Open →

HOMA-IR

Insulin Resistance — HOMA-IR, QUICKI, TyG

HOMA-IR/β, QUICKI, and TyG insulin-resistance surrogates.

Open →

LT4 · Thyroid

Levothyroxine (LT4) Weight-Based Dosing

Starting LT4 dose by indication (hypothyroidism, DTC suppression) with age and cardiac adjustments.

Open →

25-OHD · Cholecalciferol

Vitamin D Dose by 25-OHD Level

Cholecalciferol loading + maintenance by deficiency tier, with CKD nutritional-vs-active context.

Open →

KDIGO · Albuminuria

UACR Serial Trend Tracker

Track UACR over time — KDIGO A1–A3 category, trend, and % change across visits.

Open →

DKA · Protocol

DKA Management

Weight-based fluids, insulin & potassium plan with resolution criteria — euglycemic-DKA & CKD caveats.

Open →

Pediatric Nephrology

CKiD U25

Pediatric eGFR (ages 1–25)

Age/sex-specific eGFR for children and young adults.

Open →

Schwartz 2009 · Pediatric

Revised Schwartz eGFR (Pediatric)

Bedside eGFR for children from height and serum creatinine (Schwartz 2009).

Open →

CKiD U25 · Pierce 2021

CKiD U25 eGFR

Age- & sex-specific pediatric/adolescent eGFR (1–25 yr); refined from Bedside Schwartz, valid across the peds→adult transition.

Open →

Pediatric · AAP 2017

Pediatric Blood Pressure

AAP 2017 BP classification (Normal/Elevated/Stage 1–2) by age, sex & height for children 1–17.

Open →

CDC 2000 · BMI

Pediatric BMI z-score & Percentile

CDC 2000 BMI-for-age z-score and percentile (ages 2–19) with full LMS table — Underweight/Healthy/Overweight/Obesity.

Open →

Holliday-Segar · 4-2-1

Holliday-Segar Maintenance Fluids

24-h volume and 4-2-1 hourly rate from weight, with AAP 2018 isotonic-fluid guidance and CKD/HF cautions.

Open →

pRIFLE · pKDIGO

Pediatric AKI Staging

pRIFLE and pKDIGO staging for children — eCCl change OR urine-output criteria with worst-of staging.

Open →

Basu · RAI

Renal Angina Index

Risk × Injury pediatric ICU AKI prediction at 12 h; RAI ≥8 = renal angina present (high NPV for severe Day-3 AKI).

Open →

BSA · Mosteller · Du Bois · Haycock

Body Surface Area

BSA in m² by Mosteller, Du Bois, and Haycock — for chemo, steroid & renal-cleared dosing across ages.

Open →

Pediatric · UO Rate

Pediatric Urine Output

mL/kg/hr with age-specific oliguria thresholds (neonate / infant / child / adolescent) — underlies pRIFLE/pKDIGO.

Open →

Pediatric · IWL

Insensible Water Loss

Age-band IWL (mL/kg/day) adjusted for fever, phototherapy & radiant warmer — fluid-balance precision in NICU/PICU.

Open →

WHO · Gorelick · Deficit

Pediatric Dehydration

WHO + Gorelick severity scales with fluid-deficit (% × kg × 10) and IV/oral plan — slow correction for hypernatremia.

Open →

Pediatric · Ca Correction

Pediatric Calcium (Corrected & Ionized)

Albumin-corrected total Ca and ionized-Ca estimate with age-specific reference ranges (preterm → adolescent).

Open →

Neonatal · Modified KDIGO

Neonatal AKI Staging

Modified KDIGO using LOWEST-previous SCr (not pre-illness baseline) + age-adjusted UO thresholds (Jetton/AWAKEN).

Open →

WHO · CDC · Growth

Pediatric Growth Percentiles

Height-for-age, weight-for-age & weight-for-length percentiles (WHO 0–24 mo, CDC 2–20 yr) for CKD growth tracking.

Open →

Nutrition & Lifestyle

Nutrition, Body & Lifestyle

KDOQI 2020

CKD Nutrition Prescription

Protein, energy, K, P, Na, and fluid targets by stage.

Open →

Anthropometry

BMI, BSA, Ideal & Adjusted Weight

BMI (Asian-Pacific), Mosteller BSA, Devine IBW.

Open →

Salt

Sodium Intake Estimator

Daily sodium from Filipino foods vs the 2 g target.

Open →

Karvonen

Exercise Target HR Zones

Karvonen HR zones and energy expenditure.

Open →

Harris-Benedict · Mifflin

Basal Energy Expenditure

BMR from Harris-Benedict (original & revised) and Mifflin-St Jeor; KDOQI 30–35 kcal/kg CKD target.

Open →

NRI · GNRI · Malnutrition

Nutritional Risk Index (NRI & GNRI)

Standard NRI (albumin + weight) and Geriatric NRI (albumin + IBW ratio); KDOQI malnutrition risk categories.

Open →

Filipino Foods · Phosphate

Phosphorus Dietary Load Estimator

Daily phosphorus from Filipino foods vs target, with an additive-phosphorus (high-absorption) warning.

Open →

Filipino Foods · Potassium

Potassium Dietary Load Estimator

Daily potassium from Filipino foods vs target, with high-K avoidance and leaching tips.

Open →

nPNA · Dialysis

nPCR — Protein Catabolic Rate

Normalized protein catabolic rate from interdialytic BUN rise; dietary protein surrogate (target 1.0–1.2).

Open →

KA · LPD/VLPD

Ketoanalogue Supplement Dose

IBW-based ketoacid analogue dosing with the paired low-/very-low-protein diet target.

Open →

Geriatric & Comorbidity

Charlson

Charlson Comorbidity Index

Age-adjusted comorbidity burden and prognosis.

Open →

Frailty

Frailty — CFS & Fried Phenotype

Clinical Frailty Scale and Fried frailty phenotype.

Open →

SARC-F · SARC-CalF

Sarcopenia Screening — SARC-F + Calf

SARC-F questionnaire with optional calf circumference (SARC-CalF) for low-muscle screening in CKD/dialysis.

Open →

Screening & Scores

Screening & Symptom Scores

Urology

IPSS — Prostate Symptom Score

International Prostate Symptom Score and QoL.

Open →

Sexual Health

IIEF-5 — Erectile Function

5-item erectile-function screening (SHIM).

Open →

Lupus

SLEDAI-2K & Damage Index

Lupus activity (SLEDAI-2K) and SLICC/ACR damage.

Open →

Malnutrition

Malnutrition Screening — SNAQ/MIS/SGA

Three-tab nutrition screening for CKD.

Open →

Substance Use

SBIRT — AUDIT-C/DAST-10/CAGE-AID

Validated alcohol and drug screening.

Open →

Pleural Effusion

Light's Criteria

Distinguish exudate from transudate using the 3-ratio rule (Light 1972).

Open →

HIT · Hematology

4Ts Score — HIT Pretest Probability

Pretest probability of heparin-induced thrombocytopenia (Lo 2006).

Open →

STOP-BANG · Sleep Apnea

STOP-BANG — OSA Screening

8-item obstructive sleep apnea screen; high score warrants polysomnography referral.

Open →

PHQ-9 · Depression

PHQ-9 Depression Screen

9-item depression severity with PHQ-2 and a self-harm safety flag; CKD depression is 25–40%.

Open →

PSQI · Sleep

Pittsburgh Sleep Quality Index

7-component sleep-quality score (global >5 = poor); complements STOP-BANG for HD patients.

Open →

Epworth · ESS

Epworth Sleepiness Scale

8-item daytime sleepiness score (≥11 = excessive); pairs with PSQI & STOP-BANG for CKD/pre-transplant workup.

Open →

Patient-Reported Outcomes

Patient-Reported Outcomes (PROMs)

Dialysis QoL

Dialysis PROMs — KDQOL-36/DSI/IPOS

Symptom and quality-of-life PROMs for dialysis.

Open →

Transplant

Transplant PROMs — BAASIS/KTQ/PHQ-9/GAD-7

Adherence, QoL, depression, and anxiety after transplant.

Open →

Acute Kidney Injury

KDIGO

AKI Staging (KDIGO)

Stage AKI by creatinine ratio/rise and urine output.

Open →

RIFLE · ADQI

RIFLE Criteria

Risk/Injury/Failure/Loss/ESKD classification of AKI (Bellomo 2004).

Open →

AKIN

AKIN Classification

Stage AKI (1–3) from 48-h creatinine rise or urine output (Mehta 2007).

Open →

Hantavirus

HFRS Severity & Dialysis Risk

HFRS severity and dialysis-need estimate.

Open →

Dengue

Dengue-Associated AKI Risk

AKI risk estimate in dengue infection.

Open →

Thakar · Cardiac Sx

Thakar Score — AKI After Cardiac Surgery

Cleveland Clinic risk of AKI requiring dialysis after cardiac surgery.

Open →

SPARK · Non-Cardiac Sx

SPARK Index — AKI After Non-Cardiac Surgery

Preoperative AKI risk classes (A–D) before non-cardiac surgery.

Open →

Kinetic eGFR

Kinetic eGFR — AKI Creatinine Adjustment

Estimates true GFR during rising or falling creatinine using the Chen 2013 kinetic formula.

Open →

Urine Output · Fluid Balance

Urine Output & Fluid Balance

UO rate (mL/kg/h) vs KDIGO AKI thresholds; cumulative fluid balance and fluid overload % of admission weight.

Open →

Leptospirosis · Weil's

Leptospirosis-AKI / Severity Risk

Philippines-endemic Weil's disease: severity and dialysis-requiring-AKI risk from clinical predictors.

Open →

Critical Care & Emergency

GCS · Neurology

Glasgow Coma Scale (GCS)

Eye + verbal + motor response scoring; severity classification and intubation threshold.

Open →

SIRS · Sepsis-2

SIRS / Sepsis / Septic Shock

Systemic inflammatory response classification with organ dysfunction checklist (Bone 1992).

Open →

Burns · Parkland

Parkland Formula — Burns Resuscitation

24-h LR volume (4×kg×%TBSA), time-adjusted delivery rates, and Rule of Nines.

Open →

Toxicology · NAC

Acetaminophen Overdose & NAC Protocol

Rumack-Matthew nomogram risk assessment and IV NAC 21-hour dosing protocol.

Open →

Vasopressors · Inotropes

Vasopressor & Inotrope Infusion

Dose ↔ rate (mL/hr) and gtts/min for local norepinephrine, epinephrine, dopamine, dobutamine, vasopressin, milrinone formulations.

Open →

Sepsis-3

qSOFA & SOFA Score

Bedside qSOFA and full six-organ SOFA scoring; complements the SIRS/Sepsis tool.

Open →

QTc · ECG

Corrected QT Interval (QTc)

Bazett, Fridericia, Framingham & Hodges QTc with torsades risk band — for QT-prolonging drugs in CKD.

Open →

CRRT · KDIGO

CRRT Dose & Effluent Flow

Effluent rate → delivered dose (mL/kg/hr) vs the KDIGO 20–25 target, with downtime & pre-dilution correction.

Open →

CRRT · Net UF

Net Ultrafiltration Rate (CRRT)

Net fluid-removal intensity (mL/kg/hr); >1.75 mL/kg/hr is linked to mortality — distinct from the effluent dose.

Open →

CRRT · Template

CRRT Flowsheet & SBAR Handoff

Fillable, printable shift template — prescription, hourly pressures, a self-totaling fluid ledger, delivered:prescribed ratio, filter age, labs, events, and SBAR.

Open →

FST · AKI

Furosemide Stress Test

2-h urine output after 1.0–1.5 mg/kg IV; <200 mL predicts progression to KDIGO stage-3 AKI / RRT.

Open →

Fluid Balance

Fluid Overload %

Cumulative balance ÷ baseline weight; ≥10% fluid overload predicts mortality & worse AKI recovery.

Open →

Cardiorenal · Perfusion

Renal & Abdominal Perfusion Pressure

MAP − CVP (renal) and MAP − IAP (abdominal) with IAH/ACS staging — congestive & compartment AKI.

Open →

APACHE II · ICU

APACHE II Score

12 physiology variables + age + chronic health → ICU severity and estimated mortality (doubles for ARF).

Open →

Rhabdomyolysis · AKI

McMahon Score

Predicts AKI requiring RRT or death in rhabdomyolysis (score ≥6 = elevated risk).

Open →

MELD-Na · Hepatorenal

MELD & MELD-Na Score

Liver-disease severity (creatinine + dialysis weighted) — hepatorenal syndrome & ACLF prognosis.

Open →

Lactate · Sepsis

Lactate Clearance

% clearance over the resuscitation interval; ≥10% is a validated sepsis target. Rising lactate = ominous.

Open →

VIS · Vasopressors

Vasoactive-Inotropic Score

Weighted cumulative vasoactive dose; higher VIS tracks mortality, ventilation, and AKI/RRT risk.

Open →

Shock Index

Shock Index & Modified SI

HR/SBP (and HR/MAP, age SI); ≥0.9 flags occult shock & hypoperfusion before SBP falls.

Open →

Child-Pugh · Cirrhosis

Child-Pugh Score

Cirrhosis severity (Class A/B/C) from bilirubin, albumin, INR, ascites & encephalopathy — pairs with MELD-Na.

Open →

Wells · VTE

Wells Score — DVT & PE

Pretest probability for DVT and PE with the D-dimer vs imaging next step (CKD contrast caveats noted).

Open →

SAAG · Ascites

Serum-Ascites Albumin Gradient

SAAG ≥1.1 = portal hypertension; with ascitic protein splits cardiac vs cirrhotic — hepatorenal workup.

Open →

Pulmonary & Infectious Disease

CAP · PSMID 2020

Philippine CAP Risk Stratification

Low/moderate/high-risk CAP → site of care + empiric antibiotics per the 2020 PSMID/PCCP/PCP CPG.

Open →

CURB-65 · Pneumonia

CURB-65 — Pneumonia Severity

5-point CAP severity (Confusion, Urea, RR, BP, Age ≥65) → outpatient vs admit vs ICU; CRB-65 & PSI notes.

Open →

Gas Exchange

A-a Gradient

Alveolar–arterial O₂ gradient with age-expected limit — separates V/Q mismatch & shunt from hypoventilation.

Open →

ARDS · Berlin

P/F Ratio (PaO₂/FiO₂)

Berlin ARDS severity (mild/moderate/severe) with S/F surrogate; drives fluid strategy in AKI/sepsis.

Open →

Lung-Protective Vent

Minute Ventilation & Tidal Volume

Devine IBW, 6 mL/kg lung-protective tidal volume target & minute ventilation for ICU/AKI ventilation.

Open →

REVEAL 2.0 · PAH

REVEAL 2.0 — PAH Risk Score

Weighted pulmonary-arterial-hypertension risk (low/intermediate/high); pulmonary HTN is common in dialysis.

Open →

Cardiorenal · IVC

RAP from IVC Collapsibility

ASE 3-tier right-atrial pressure from IVC size & collapse — venous congestion → cardiorenal AKI.

Open →

Oncology & Urology

PSA · Prostate Panel · Screening

Prostate Panel Interpreter & PSA Calculator

Drug-corrected PSA interpretation (finasteride ×2, dutasteride ×2.5) with % Free PSA, PSA density, PSA velocity, and age-adjusted risk tiers.

Open →

PSA · Full Interpretation Guide

Prostate Panel Interpreter — Full Guide

In-depth PSA calculator and guide: prostate panel results, drug corrections, risk tiers, and follow-up recommendations.

Open →

PSA · Prostate Cancer

PSA Doubling Time (PSADT)

2-point and multi-point PSADT from serial PSA values; progression velocity and AUA risk bands.

Open →

RENAL · Renal Mass

RENAL Nephrometry Score

R+E+N+A+L tumor complexity scoring (4–12); Low/Moderate/High with hilar suffix for partial vs radical nephrectomy planning.

Open →

Rheumatology

Gout · ACR/EULAR

2015 ACR/EULAR Gout Classification Criteria

7-domain scoring (joints, MSU crystals, serum urate, imaging); score ≥8 = gout. MSU crystal identification is sufficient criterion.

Open →

Rheumatoid Arthritis · ACR/EULAR

2010 ACR/EULAR RA Classification Criteria

4-domain scoring (joints, serology, APR, duration); score ≥6/10 = definite RA. Guides early DMARD initiation.

Open →

Kidney Stones

Prevention

Stone Prevention — Fluid Target

Urine/fluid target and dietary stone-risk.

Open →

Acute

Ureteral Stone Passage Likelihood

Spontaneous-passage likelihood by size/location.

Open →

24-h Urine · Pak

Urine Supersaturation / Stone Risk Profile

Interpret 24-h urine Ca, oxalate, citrate, uric acid, Na & pH against targets for stone-recurrence counseling.

Open →

Other Tools

Lookup · WHO

ICD-10 Search

Searchable lookup of the WHO ICD-10 classification — the 10,469-code international set PhilHealth's DRG grouper uses. Search by keyword, code prefix, or fragment.

Open →

No calculators match your search. Clear

Important: These calculators are educational aids and do not replace clinical judgment, examination, or the advice of your own physician. Reference ranges and thresholds follow current KDIGO/KDOQI and specialty guidelines but must be applied in clinical context. More tools from the guide library are being added to this index over time.

Nephrology Calculators & Clinical Tools

Kidney Function & GFR

Pharmacology & Dosing

CKD Risk & Progression

Dialysis Adequacy & Fluid

Kidney Transplant

Fluids, Electrolytes & Acid–Base

Minerals, Anemia & Iron

Cardiometabolic

Endocrine & Glucose

Pediatric Nephrology

Nutrition, Body & Lifestyle

Geriatric & Comorbidity

Screening & Symptom Scores

Patient-Reported Outcomes (PROMs)

Acute Kidney Injury

Critical Care & Emergency

Pulmonary & Infectious Disease

Oncology & Urology

Rheumatology

Kidney Stones

Other Tools

W Rivero, MD, FPCP, DPSN