3-Part Hematology Analyzer with Integrated ESR Module

What is the 3-Part Hematology Analyzer with Integrated ESR Module?

This analyzer combines a 3-part blood count with an automated erythrocyte sedimentation rate module, so that one tube yields both results in a single run. It fits clinics that currently send ESR tests out or operate a separate manual Westergren stand.

Overview

The platform consists of a standard 3-part counting unit and an ESR module that uses capillary photometry: blood is drawn into a capillary or vial, held at a controlled temperature, and the fall of the red cell column is tracked optically over a set period, usually 20 to 30 minutes for an accelerated result. The analyzer calculates the sedimentation rate in millimeters per hour from the optical curve, using an algorithm validated against the Westergren reference method. Because both tests use the same EDTA tube, the laboratory saves a separate sample collection and reduces manual handling. The software reports a combined profile, applies age and sex reference ranges, and can suppress ESR reporting when the hemoglobin or red cell count is outside defined limits.

How does it work?

A 3-part analyzer aspirates a small volume of anticoagulated whole blood, then splits it into separate channels for dilution and measurement. Red cells and platelets are counted in an isotonic diluent by the Coulter principle, in which each cell passing a small aperture displaces conductive electrolyte and creates a voltage pulse proportional to cell volume. White cells are counted in a second channel where a lysing reagent destroys red cell membranes while leaving white cells intact for sizing. The analyzer sorts white cells into three populations using two software thresholds on the size histogram: lymphocytes, a mixed population of monocytes, eosinophils and basophils, and granulocytes. Hemoglobin is released by lysis and measured photometrically at about 540 nm after conversion to a stable chromogen. Software computes indices such as MCV, MCH and MCHC, applies quality control rules, and stores or transmits the report.

What are the key features?

• Integrated ESR module using capillary photometry on the same EDTA tube
• Accelerated ESR result in 20 to 30 minutes versus one hour Westergren
• Combined blood count and ESR report from a single sample
• Automatic temperature control of the sedimentation measurement
• ESR suppression rules based on hemoglobin and red cell limits
• Single worklist and quality control program for both tests

What are the technical specifications?

A typical 3-part hematology analyzer with integrated esr module configuration offers throughput of 50–60 blood counts/h; 20 ESR/h, ESR method of Capillary photometry, 20–30 min accelerated, ESR measuring range of 0–120 mm/h, sample type of EDTA whole blood, one tube for both tests, reportable parameters of 22 CBC parameters plus ESR and temperature control of 37 °C ±0.5 °C for counting; 18–25 °C for ESR. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The 3-Part Hematology Analyzer with Integrated ESR Module is used in routine blood count with ESR in one visit, inflammatory and autoimmune disease follow-up, pre-operative assessment in small hospitals and outpatient clinics replacing manual Westergren. Across the wider 3-Part Analyzers class, laboratories also deploy it for routine complete blood counts in community clinics, anemia and infection screening and pre-operative and antenatal blood counts.

Which standards and certifications apply?

Relevant standards and methods include ISO 15189, CLSI H26-A2, CLSI H20-A2, CLSI EP05, IEC 61010-1 and IEC 61010-2-101. Certification candidates for this model are CE, ISO 13485 manufacturing and NMPA class II registration; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Place the analyzer on a stable, level bench away from direct sunlight, strong vibration and large electrical motors, with a grounded outlet and a supply of clean, low-particulate water if the instrument needs it. Perform installation verification with the manufacturer or distributor, including background counts, precision, carryover and linearity checks with fresh or stabilized blood. Run two or three levels of quality control at the start of each working day and after reagent changes. Daily cleaning of the aspiration probe, weekly cleaning of the apertures and periodic replacement of pump tubing, seals and the peristaltic pump keep results stable. Treat all blood samples, waste and control material as potentially infectious and follow local biosafety rules for decontamination and disposal.

How do I select the right 3-Part Hematology Analyzer with Integrated ESR Module?

Select this variant when ESR requests are frequent enough to justify the module, for example more than twenty per day, or when a manual Westergren stand is being retired. Confirm that the ESR algorithm is validated against the Westergren reference method, ask for the correlation data, and check the tube type and fill volume accepted. Verify that the counting performance is not reduced by sharing the platform.

How does it compare with other 3-Part Analyzers variants?

Choose a 3-part analyzer when the clinicians served mainly need total counts, hemoglobin and a basic differential, and when the daily workload is low enough that a 5-part flow cytometry channel would not be used. Compare variants by throughput in samples per hour, minimum aspiration volume for capillary sampling, whether the reagent system is open or proprietary, and the quality of the histogram display. Confirm autoloader capacity if more than fifty samples arrive in a batch, check barcode and LIS connectivity, and review the calibration and control materials offered. Ask about the expected life of the shear valve and pump tubing, because these parts dominate maintenance cost, and about local service response time for a clinic without an in-house engineer.