CV Calculator — Alternative IQC Method template
A form in the Internal Quality Control procedure (PR23), mapped to ISO 15189:2022 clause 7.3.7.2. Fill it in whenever the task occurs. Used by the laboratory team.
FormISO 15189 · 7.3.7.2As needed
Calculated automaticallyRed = outside limits
Your LaboratoryCV Calculator — Alternative IQC Method | YL-LAB-FRM-23-F05 v1.0
Record: CV Calculator — Alternative IQC Method — October 2026
Select 1 patient sample, rerun 4 times, compute CV. Accept if CV ≤ Biological Variation or established MU.
TestGlucose
Date2026-10-01
| Replicate | Result 1 | Result 2 | Result 3 | Result 4 | Mean | SD | CV% |
|---|---|---|---|---|---|---|---|
| 5.02 | 4.97 | 4.96 | 4.89 | 4.96 | 0.05 | 1.08 | |
| 4.96 | 4.96 | 5.03 | 5.06 | 5.00 | 0.05 | 1.01 | |
| 4.92 | 5.08 | 5.03 | 4.91 | 4.99 | 0.08 | 1.67 | |
| 4.95 | 5.02 | 4.98 | 5.05 | 5 | 0.04 | 0.88 | |
| 4.92 | 5.07 | 5.04 | 4.90 | 4.98 | 0.09 | 1.71 |
Overall Mean CV%1.27
Maximum Allowable MU / Biological Variation Goal
Decision (CV ≤ Max Allowable)
Sign-off
| Role | Name | Signature | Date |
|---|---|---|---|
| Completed by | |||
| Reviewed by |
Shaded cells are calculated automatically. Values in red are outside their limits. † marks a corrected value (see Corrections).
Controlled document. Printed copies are uncontrolled unless stamped.Page 1
A4 portrait · first page · showing 5 of 5 rowsExactly as LabToolkit Pro prints it — with your logo and colours
What it records
- Replicate
- Result 1
- Result 2
- Result 3
- Result 4
- Mean
- SD
- CV%
Instructions on the form
- Select 1 patient sample, rerun 4 times, compute CV. Accept if CV ≤ Biological Variation or established MU.
Sign-off
- Completed by
- Reviewed by
Related templates
- IQC Frequency Determination Form (PR23-F01)
- In-house IQC Preparation Log (PR23-F02)
- IQC Statistical Tool — Levey-jennings Chart Setup (PR23-F03)
- IQC Daily Log (PR23-F04)
- Levey-Jennings chart & Westgard multirule monitor (PR23-T01)
- Sigma metric & QC strategy planner (PR23-T02)
- Guide: Levey-Jennings charts and Westgard rules
- Guide: ISO 15189 documentation checklist
Clause references are to ISO 15189:2022; check them against your licensed copy of the standard.