ﺑﺎﺯﮔﺸﺖ ﺑﻪ ﺻﻔﺤﻪ ﻗﺒﻠﯽ
خرید پکیج
تعداد آیتم قابل مشاهده باقیمانده : -1 مورد

Common reasons for abnormal fasting plasma glucose and glycated hemoglobin measurements

Common reasons for abnormal fasting plasma glucose and glycated hemoglobin measurements
Fasting plasma glucose
Falsely low
  • Delayed processing
  • Improper collection (eg, use of tube that does not inhibit glycolysis)
  • Improper handling (eg, lack of refrigeration)

Falsely high

  • Inadequate fasting
  • Acute stressors, including physical illness
  • Acute, intense exercise (within 1 hour of collection)
  • Medications (eg, glucocorticoids)
Glycated hemoglobin (A1C)
Falsely low (high RBC turnover)
  • Chronic hemolysis (thalassemia, G6PD deficiency)
  • Treatment for iron, vitamin B12, or folate deficiency
  • Erythropoietin treatment
  • Hemodialysis
  • Advanced chronic kidney disease (eGFR <30 mL/min/1.73 m2)
  • Acute blood loss
  • Blood transfusion
  • HIV infection

Falsely high (low RBC turnover)

  • Iron deficiency anemia
  • Vitamin B12 or folate deficiency anemia
eGFR: estimated glomerular filtration rate; G6PD: glucose-6-phosphate dehydrogenase; HIV: human immunodeficiency virus; RBC: red blood cell.
References:
  1. American Diabetes Association Professional Practice Committee. Diagnosis and classification of diabetes: Standards of care in diabetes—2024. Diabetes Care 2024; 47:S20.
  2. Kim PS, Woods C, Georgoff P, et al. A1C underestimates glycemia in HIV infection. Diabetes Care 2009; 32:1591.
Graphic 146193 Version 2.0