The CBC Analyzer Calibrator provides precise, traceable measurement values for calibrating automated hematology analyzers, establishing baseline accuracy for parameters including WBC, RBC, HGB, MCV, and PLT.

What Are Hematology Controls / Calibrators?

Hematology controls and calibrators are specialized, reference-grade biological materials engineered to maintain laboratory measurement standards.

Calibrators contain known concentrations of cellular components used to set and adjust the baseline measurement scaling of hematology analyzers.
Controls are stable test samples used on a daily or shift-by-shift basis to monitor ongoing precision and system reproducibility after calibration is established.

Unlike general operational reagents that perform cell processing during normal run cycles, calibrators and controls function as quantitative reference standards required for analytical verification and quality compliance.

Role in Hematology Quality Control

Maintaining analytical accuracy in complete blood count testing requires systematic reference adjustments.
Measurement Traceability: Aligns optical and electrical impedance channels with internationally recognized reference methods.
Post-Maintenance Recalibration: Restores system accuracy after optical adjustments, fluidic component replacements, sensor recalibrations, or major instrument servicing.
Reagent Lot Adjustments: Corrects baseline optical shift when transitioning between different manufacturing lots of working reagents.
Regulatory Compliance: Fulfills standard operating procedure requirements under laboratory accreditation frameworks.

Control Levels / Application

For comprehensive quality control routines following calibration, hematology control systems operate across three distinct physiological concentrations:

Low Level: Evaluates instrument sensitivity at abnormally low cell counts. Essential for validating clinical decision thresholds for severe anemia, leukopenia, and thrombocytopenia.

Normal Level: Verifies measurement accuracy within standard physiological ranges for routine patient screening.

High Level: Tests analyzer detector response at elevated cellular concentrations during leukocytosis, erythrocytosis, or thrombocytosis.

Control vs. Calibrator

Technical Parameter	CBC Analyzer Calibrator	Hematology Control (Low / Normal / High)
Primary Function	Adjusts instrument baseline and sets response factors	Verifies ongoing measurement precision and stability
Usage Frequency	Periodic (Installation, maintenance, reagent lot changes)	Daily, shift-based, or per test batch
Target Values	Single fixed assignment value per parameter with narrow limits	Defined value ranges across low, normal, and high concentrations
Mathematical Role	Changes calibration slope and intercept in system memory	Plots data points on Levey-Jennings charts to detect drift
Metrological Standard	Primary or secondary reference material standard	Secondary quality monitoring material

Compatible Hematology Analyzers

Formulated with stabilized biological components to match whole blood sample characteristics, supporting integration across varied instrument platforms:

3-Part Differential Systems: Impedance-based counters requiring calibration for WBC, RBC, HGB, HCT, MCV, MCH, MCHC, and PLT.

5-Part Differential Systems: Multi-angle laser scatter, flow cytometry, and chemical staining platforms requiring differential calibration across all sub-populations.

Assigned Values / Parameters

Each lot is validated against reference methods and supplied with a lot-specific Assay Value Sheet containing target values and acceptable ranges:

Parameter	Abbreviation	Typical Target Range	Assigned Unit
White Blood Cells	WBC	6.5 - 8.5	x10^9/L
Red Blood Cells	RBC	4.00 - 5.00	x10^12/L
Hemoglobin	HGB	120 - 150	g/L
Mean Corpuscular Volume	MCV	80.0 - 95.0	fL
Platelets	PLT	180 - 280	x10^9/L

Product Specifications

Specification Item	Details
Product Name	CBC Analyzer Calibrator
Formulation	Stabilized cellular suspension in a preservative medium
Physical State	Liquid suspension
Assigned Parameters	WBC, RBC, HGB, MCV, PLT, HCT
Fill Volume	2.0 mL / 3.0 mL per vial
Traceability	Referenced to international reference standards
Manufacturing Certification	ISO 13485
Packaging Options	Multi-vial kits with lot-specific barcode assay sheets

Storage & Stability

Temperature control preserves cell membrane integrity and parameter stability throughout product life:

Unopened Storage Temperature: 2 to 8 degrees Celsius. Do not freeze.

Unopened Shelf Life: 60 days from manufacturing date when stored at 2 to 8 degrees Celsius.

Open-Vial Stability: 7 days when stored tightly sealed at 2 to 8 degrees Celsius immediately after sampling.

Thermal Protection: Shipped in temperature-monitored insulated packaging to protect thermal stability during transit.

Quality Assurance

Manufacturing protocols maintain lot-to-lot consistency and measurement verification:

Metrological Verification: Every calibration lot is assigned values using reference instruments verified against international standards.

Homogeneity Testing: Random vial sampling across production cycles verifies intra-lot consistency (Coefficient of Variation <= 1.0%).

Stability Monitoring: Real-time and accelerated stability testing performed on every production batch.

Regulatory Documentation: Certificate of Analysis and Safety Data Sheet provided with each delivery lot.

FAQ

Q: How often should an analyzer be calibrated using a calibrator?

A: Recalibration is required upon initial instrument installation, following routine preventive maintenance, after major repairs, when daily quality control results show consistent bias, or when switching to a new reagent lot according to laboratory protocols.

Q: What is the difference between open-vial stability and unopened shelf life?

A: Unopened shelf life refers to the period the calibrator maintains assigned values when stored sealed at 2 to 8 degrees Celsius. Open-vial stability indicates the number of days the product remains accurate after opening, provided it is handled under clean conditions and returned to 2 to 8 degrees Celsius immediately after use.

Q: Can hematology controls be used instead of a calibrator?

A: No. Controls monitor system precision across numerical ranges, whereas calibrators provide exact reference values used by analyzer software to adjust mathematical response curves and baseline calibration factors.

Q: How should the calibrator be prepared before sampling?

A: Remove the vial from 2 to 8 degrees Celsius storage and allow it to equilibrate to room temperature (15 to 30 degrees Celsius) for 15 minutes. Mix thoroughly by gentle, complete inversion before presenting the sample to the sampling probe. Avoid shaking to prevent cell disruption or air bubbles.

Q: How is temperature maintained during international shipping?

A: Orders are packed in thermal packaging with temperature-insulating materials and cold packs designed to maintain 2 to 8 degrees Celsius throughout air transit.

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