The analyzers, thanks to the efforts of NGSP
and IFCC, have very good CVs.
is an outreach effort of the Portable Fuel Container Manufacturers Association.
The current NGSP
criterion is stringent; at least 37 of 40 sample results (for samples in the 4%-10% Hb [A.
12: History of NGSP
Manufacturer Certification Criteria 71 Table 4.
1c] must be done according to the DCCT method and in a laboratory accredited by the NGSP
We found small but significant differences among the NGSP
certified lab methods.
In order to further ensure uniformity in GHb testing, the NGSP
is now pushing the Center for Medicare and Medicaid Services to make NGSP
lab certification a Health Plan Employer Data and Information Set measure.
Replacement statement: According to NGSP
, "Laboratories use many different methods for measuring A1C, but some of these methods can give inaccurate results when the patient has a hemoglobin variant such as sickle cell trait or if there is an elevated level of fetal hemoglobin (HbF).
All instruments were NGSP
certified at the time of the evaluation (5).
(the National Glycohemoglobin Standardization Program now uses its acronym as its official name) provides updated tables containing information for most of the commonly used current HbA1c methods for the four most common Hb variants, elevated HbF and carbamylated Hb.
1c] assays in the US are certified by the NGSP
(formerly the National Glycohemoglobin Standardization Program) with stringent analytical performance requirements, (b) multiple testing methods and technologies are available and used in laboratory and/or point-of-care (POC) settings, and (c) there is considerable knowledge about the clinical impact of test results.
mean corpuscular volume; NGSP
= National Glycohemoglobin Standardization Program; RDW = red blood cell distribution width.