Passing–Bablok regression software Analyse‑it provides a validated implementation of the non‑parametric, outlier‑robust Passing–Bablok regressionso you can assess agreement, quantify bias, and meet CLSI EP09‑A3 requirements — all within Excel.

Trusted by over 60,000 users at top-10 IVD manufacturers for more than 30 years.

• Accurate, compliant Passing–Bablok
  Apply the 1983/1988 method and CLSI EP09‑A3 guidelines to verify agreement and ensure your method meets regulatory and clinical expectations.
• Confirm method comparability
  Detect proportional or constant bias quickly and decide with confidence whether a new or updated method matches your reference method.
• Detect proportional bias and non‑constant precision
  Identify proportional bias and determine whether precision is constant or varies across the measuring range.
• Bias at decision points
  Test bias at clinically critical thresholds to confirm you can meet claimed performance and support verification or validation studies.
• Support for replicate measurements
  Handle singlicate, duplicate, and replicate measurements, correctly estimating within‑subject variation and adjusting limits of agreement accordingly.
• Partition into measuring intervals
  Split data into intervals when precision varies and apply the appropriate analysis to each segment.
• Runs in Microsoft Excel for easy deployment across your team. Analyse‑it integrates directly into Excel, letting you import data from instruments, analyse immediately, and generate publication‑ready reports without learning new software or managing proprietary file formats — significantly faster and more flexible than standalone tools.

* Available in the Method Validation and Ultimate editions.

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