While staying at the lab:
Make sure that the samples for both tests are taken and tested within
15 minutes of each other.
• Wash your hands before obtaining a blood sample.
• Never use your meter with blood that has been collected in a gray-
top test tube.
You may still have a variation from the result because blood glucose
levels can change significantly over short periods of time, especially if
you have recently eaten, exercised, taken medication or experienced
stress*
2
. In addition, if you have eaten recently, the blood glucose
level from a finger prick can be up to 70 mg/dL (3.9 mmol/L) higher
than blood drawn from a vein (venous sample) used for a lab test*
3
.
Therefore, it is best to fast for eight hours before doing comparison
tests. Factors such as the amount of red blood cells in the blood (a
high or low hematocrit) or the loss of body fluid (dehydration) may
also cause a meter result to be different from a laboratory result.
SPecificAtiOnS
Model no.:
TD-4257
Dimension & Weight:
102 mm (L) x 64 mm (W) x 29.5 mm (H),
81 g
Power Source:
Two AAA alkaline batteries
Display:
LCD
Memory:
1000 measurement results with
respective date and time
external output:
interface cable
Auto electrode inserting detection
Auto sample loading detection
Auto reaction time count-down
Auto turn-off after 3 minutes without action
temperature Warning
Operating condition:
10 °C to 40 °C, below 85 % R.H.
(non-condensing)
Storage/transportation
condition:
-20 °C~60 °C, below 95 % R.H.
Measurement units:
mmol/L and mg/dL (switchable)
Measurement range:
10~600 mg/dL (0.5~33.3 mmol/L)
this device has been tested to meet the electrical and safety require-
ments of:
IEC/EN 61010-1, IEC/EN 61010-2-101, EN 61326-1, IEC/EN 61326-2-6.
References
*1: American Diabetes Association position statement on the Diabetes Control and Complications
Trial (1993).
*2: Surwit, R.S., and Feinglos, M.N.: Diabetes Forecast (1988), April, 49-51.
*3: Sacks, D.B.: “Carbohydrates. “ Burtis, C.A., and Ashwood, E.R.( ed.), Tietz Textbook of Clinical
Chemistry. philadelphia: W.B. Saunders Company (1994), 959.
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