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Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay.
Bull World Health Organ. 2002; 80(10):813-6.BW

Abstract

OBJECTIVE

To evaluate the Haemoglobin Colour Scale developed by WHO for estimating haemoglobin concentration and to compare the results obtained using it and the HemoCue assay with those determined using a reference method, the Technicon H3 analyser.

METHODS

The Colour Scale and HemoCue assay were used to test 408 blood samples. Subsequently, Bland-Altman plots were determined and the proximity of the test results to those obtained using the reference method was determined.

FINDINGS

The mean difference between the Haemoglobin Colour Scale and the reference method was 0.19 g/dl (95% confidence interval: 3.50 g/dl below to 3.11 g/dl above); the corresponding value for the HemoCue assay was 0.50 g/dl (1.16 g/dl below to 0.16 g/dl above). Only 46.08% of the results obtained by means of the Colour Scale were within 1.0 g/dl of the reference method, whereas 95.34% of the HemoCue results fell within this limit; 22.79% of the Colour Scale results but none of the HemoCue results lay more than 2.0 g/dl from the reference method.

CONCLUSION

The Haemoglobin Colour Scale test is too inaccurate for general use, particularly if devices such as the HemoCue are available.

Authors+Show Affiliations

Department of Anaesthesia, Royal Cornwall Hospital, England. jpaddle@doctors.org.uk

Pub Type(s)

Comparative Study
Evaluation Study
Journal Article

Language

eng

PubMed ID

12471402

Citation

Paddle, J J.. "Evaluation of the Haemoglobin Colour Scale and Comparison With the HemoCue Haemoglobin Assay." Bulletin of the World Health Organization, vol. 80, no. 10, 2002, pp. 813-6.
Paddle JJ. Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay. Bull World Health Organ. 2002;80(10):813-6.
Paddle, J. J. (2002). Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay. Bulletin of the World Health Organization, 80(10), 813-6.
Paddle JJ. Evaluation of the Haemoglobin Colour Scale and Comparison With the HemoCue Haemoglobin Assay. Bull World Health Organ. 2002;80(10):813-6. PubMed PMID: 12471402.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evaluation of the Haemoglobin Colour Scale and comparison with the HemoCue haemoglobin assay. A1 - Paddle,J J, Y1 - 2002/11/28/ PY - 2002/12/10/pubmed PY - 2002/12/28/medline PY - 2002/12/10/entrez SP - 813 EP - 6 JF - Bulletin of the World Health Organization JO - Bull. World Health Organ. VL - 80 IS - 10 N2 - OBJECTIVE: To evaluate the Haemoglobin Colour Scale developed by WHO for estimating haemoglobin concentration and to compare the results obtained using it and the HemoCue assay with those determined using a reference method, the Technicon H3 analyser. METHODS: The Colour Scale and HemoCue assay were used to test 408 blood samples. Subsequently, Bland-Altman plots were determined and the proximity of the test results to those obtained using the reference method was determined. FINDINGS: The mean difference between the Haemoglobin Colour Scale and the reference method was 0.19 g/dl (95% confidence interval: 3.50 g/dl below to 3.11 g/dl above); the corresponding value for the HemoCue assay was 0.50 g/dl (1.16 g/dl below to 0.16 g/dl above). Only 46.08% of the results obtained by means of the Colour Scale were within 1.0 g/dl of the reference method, whereas 95.34% of the HemoCue results fell within this limit; 22.79% of the Colour Scale results but none of the HemoCue results lay more than 2.0 g/dl from the reference method. CONCLUSION: The Haemoglobin Colour Scale test is too inaccurate for general use, particularly if devices such as the HemoCue are available. SN - 0042-9686 UR - https://www.unboundmedicine.com/medline/citation/12471402/Evaluation_of_the_Haemoglobin_Colour_Scale_and_comparison_with_the_HemoCue_haemoglobin_assay_ L2 - https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/12471402/ DB - PRIME DP - Unbound Medicine ER -