How to size a clinical chemistry analyzer for your daily test volume
A practical guide to matching analyzer throughput to your lab's workload — without overspending.
Clinical chemistry analyzers are the backbone of most hospital and reference laboratories, running hundreds to thousands of tests per day. Choosing the wrong throughput class — too small and you create bottlenecks; too large and you pay for capacity you never use.
Understand your daily test volume
Start with 12 months of historical data from your LIS or manual logbooks. Calculate your average daily test volume (ADTV) and your 90th-percentile peak day. Analyzers are rated by tests-per-hour (TPH) under ideal conditions; real-world throughput is typically 70–80% of rated capacity.
Match throughput class to volume
| Daily volume | Analyzer class | Typical TPH |
|---|---|---|
| Up to 400 tests/day | Benchtop compact | 200–400 |
| 400–1,200 tests/day | Mid-range | 500–800 |
| 1,200–4,000 tests/day | High-throughput | 1,000–1,800 |
| 4,000+ tests/day | Core lab / modular | 2,000+ |
Consider reagent and consumable costs
A higher-throughput analyzer often carries a higher reagent kit price. Calculate cost-per-reportable result (CPRR) across your actual test mix — not just the headline price per kit. An apparently cheaper analyzer can cost more per result if reagent yields are lower.
Plan for test menu expansion
Laboratory test menus expand with clinical demand. Ask vendors for a list of tests available on the platform and the roadmap for new assay additions. Reagent rental agreements that lock you to one vendor can limit your flexibility to add tests.
Putting it together
For many district hospitals running a few hundred to around a thousand tests a day, a mid-range chemistry analyzer with an open-reagent option tends to balance throughput, cost, and flexibility. Your own volume data should make the final call — our team can walk through it with you.
This article is general guidance. Always follow the manufacturer’s instructions for use and confirm requirements that apply to your facility.
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Chemistry, hematology, immunoassay, urinalysis, and microbiology analyzers — with reagents and consumables.
