Nalaz OGTT

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The HbA1c

Enlarge Haemoglobin, in your blood, joins up with glucose to form the chemical called HbA1c

In the blood stream are the red blood cells, which are made of a molecule, haemoglobin. Glucose sticks to the haemoglobin to make a 'glycosylated haemoglobin' molecule, called haemoglobin A1C or HbA1C. The more glucose in the blood, the more haemoglobin A1C or HbA1C will be present in the blood.
Red cells live for 8 -12 weeks before they are replaced. By measuring the HbA1C it can tell you how high your blood glucose has been on average over the last 8-12 weeks. A normal non-diabetic HbA1C is 3.5-5.5%. In diabetes about 6.5% is good.
The HbA1C test is currently one of the best ways to check diabetes is under control; it is the blood test that gets sent to the laboratory, and it is done on the spot in some hospital clinics. Remember, the HbA1C is not the same as the glucose level.
Coincidentally the glucose/HbA1C numbers for good control are rather similar though in the UK and Europe: glucose levels averaging 6.5 mmols/l before meals is equivalent to 7% HbA1C (glucose levels are higher after meals)

vise na ovom linku: http://medweb.bham.ac.uk/easdec/prev..._the_hba1c.htm

Što je hemoglobin A (HbA1c)?

Glukohemoglobini (A i A ) su frakcije hemoglobina A iz eritrocita. Vezanjem glukoze iz krvi na hemoglobin A nastaje hemoglobin A pri čemu je vrijednost (%) razmjerna razini glikemije tijekom razdoblja određenog prosjećnim vijekom eritrocita (3-4 mjeseca). Dakle, vrijednost HbA1c odražava prosječnu vrijednost glukoze u krvi tijekom zadnjih 8-12 tjedana. Uredan nalaz je HbA1c ispod 7%, a sve što je iznad govori za nedovoljno dobro održavanje razine glukoze u krvi.
NAPOMENA: Na HbA1c nema mnogo utjecaja hrana pojedena posljednjih nekoliko dana prije uzimanja uzorka krvi, pa se ni njegova vrijednost ne može smanjiti preskakanjem obroka prije same pretrage ili poboljšanjem nadzora nad glukozom u krvi dan prije uzimanja uzorka. Za osobe s tipom 1 šećerne bolesti obavezno je tromjesečno određivati vrijednosti HbA1c.




ukratko: prosjecna vrijednost glukoze u krvi u zadnja 3mj.