Active recall
Quiz yourself on abnormal & critical values
Classify results as high, low, or normal, recognize critical values, and place tests in the right panel. A fresh 10-question round is free every day.
Lab values, made memorable
Every lab value a nursing student needs, in one place.
Reference ranges in both conventional and SI units, critical values, common causes of high and low results, and the nursing considerations that matter — for 117 tests across 15 panels. Then lock it in with quizzes and flashcards.
117
Lab tests referenced
15
Panels, CBC to drug levels
SI +
conventional
conventional
Both unit systems, every test
Free
Full reference & converter
Browse by panel
Start with a panel
Every test grouped the way it's ordered on the ward.
CBCComplete Blood Count (CBC)Red cells, white cells, platelets, and the red-cell indices used to classify anemia and infection.16 tests →ElectrolytesElectrolytes & MineralsSodium, potassium, chloride, bicarbonate, calcium, magnesium, and phosphate — the core of the BMP.9 tests →RenalKidney FunctionBUN, creatinine, eGFR, and uric acid — how the kidneys are filtering.5 tests →GlucoseGlucose & DiabetesFasting and random glucose, HbA1c, the glucose tolerance test, and C-peptide.5 tests →LiverLiver Function (LFTs)Transaminases, alkaline phosphatase, bilirubin, albumin, protein, and ammonia.9 tests →LipidsLipid PanelTotal, LDL, and HDL cholesterol, triglycerides, and VLDL for cardiovascular risk.5 tests →ThyroidThyroid FunctionTSH, free and total T4/T3, and thyroid antibodies.6 tests →CoagsCoagulation StudiesPT/INR, aPTT, fibrinogen, and D-dimer for bleeding and clotting.7 tests →ABGArterial Blood Gas (ABG)pH, PaCO₂, PaO₂, bicarbonate, and saturation for acid–base and oxygenation.6 tests →UAUrinalysisSpecific gravity, pH, protein, glucose, ketones, and the microscopic exam.11 tests →CardiacCardiac MarkersTroponin, CK-MB, myoglobin, and the natriuretic peptides.7 tests →IronIron StudiesSerum iron, ferritin, TIBC, transferrin, and saturation for anemia workups.5 tests →TumorTumor MarkersPSA, CEA, CA-125, CA 19-9, AFP, and more — for monitoring, not screening (education only).7 tests →Drug levelsTherapeutic Drug LevelsDigoxin, lithium, phenytoin, vancomycin, and other drugs with narrow therapeutic windows.9 tests →ChemistryInflammatory & Other ChemistryCRP, ESR, procalcitonin, lactate, pancreatic enzymes, osmolality, and key vitamins.10 tests →
Know the danger zones
Critical values to recognize on sight
A sample of the panic values covered across the reference.
Absolute Neutrophil Count (ANC)< 500 cells/µL is severe neutropenia (high infection risk)Acetaminophen Level> 150 µg/mL at 4 h post-ingestion risks hepatotoxicityActivated Partial Thromboplastin Time (aPTT)> 70 seconds (bleeding risk)Arterial pH< 7.20 or > 7.60Bicarbonate (CO₂ content)< 15 or > 40 mmol/LBilirubin, Total> 15 mg/dL in neonates (kernicterus risk)
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Flashcards & a unit converter
Drill ranges with panel-by-panel flashcards, and convert any result between SI and conventional units with the free converter.