Control of blood haemoglobin determinations by a simple effective method
Open Access
- 1 January 1962
- journal article
- research article
- Published by BMJ in Journal of Clinical Pathology
- Vol. 15 (1), 44-46
- https://doi.org/10.1136/jcp.15.1.44
Abstract
Thawed, frozen `mixed oxalated' blood for haematology or citrated blood from the blood bank may be used as a precision control, maintaining reliability and accuracy, for periods of one to two years from a single batch of control material. Blood haemoglobin determinations using the cyanmethaemoglobin method and the Coleman Jr. spectrophotometer can be done routinely with a day-to-day variability of ±0·3 to 0·5 g./100 ml. (or ±2 to 3%) as demonstrated in the range of 11 to 15 g./100 ml. A by-product of this precision is that it effectively checks the calibration of the 20 lambda (μl.) pipette for use in general chemistry if needed.Keywords
This publication has 2 references indexed in Scilit:
- Proposal for a Certified Standard for Use in Hemoglobinometry. Second and Final ReportAmerican Journal of Clinical Pathology, 1958
- The Quality Control of Laboratory PrecisionAmerican Journal of Clinical Pathology, 1955