|Downtime form:||A-1a Doctor/Provider Orders - Pathology Core and Specialty Care Nursery|
|Lavender top tube 3 mL (EDTA)|
Glycemic control guidelines: Non-diabetic <6% Goal <7% Therapeutic action >8%
This test is also performed in the Iowa River Landing (IRL) clinical laboratory (for specimens drawn at that site).
Rheumatoid factor less than 750 IU/mL and ascorbic acid less than 50 mg/dL do not interfere. In hemolytic anemia and iron deficiency anemia, the average age of erythrocytes is altered. Caution should be used when interpreting the HbA1c results from patients with these conditions (2, 3). This assay is not useful in judging day-to-day glucose control and should not be used to replace daily home testing of urine and blood glucose. References: (1) Glick MR, Ryder KW, Jackson SA. Graphical Comparisons of Interferences in Clinical Chemistry Instrumentation. Clin Chem 1986;32:470-474. (2) Greiling H, Gressner AM, eds. Lehrbuch der Klinischen Chemie und Pathobiochemie, 3rd ed. Stuttgart/New York: Schattauer, 1995:279. (3) Bessis M. Living Blood Cells and their Ultrastructure. Berlin: Springer-Verlag; 1973.