Roche CoaguChek XS System Betreibershandbuch PDF herunterladen (Seite 81)

Testing a Blood Sample

Getting a good capillar

y blood sample

To get a suitable drop of blood:

■ Warm the hand. Have the patient hold it under his or her arm or use a hand warmer. Wash

hands with soap and warm water. Dry thoroughly.

■ Have the patient let that arm hang down by his or her side before lancing a finger.

■ Massage the finger from its base.

Use these techniques until the fingertip has increased color.

■ Immediately after lancing, massage gently along the side of the finger to obtain a good

blood drop without pressing or squeezing too hard.

■ Apply the blood drop to the test strip immediately (within 15 seconds).

■ Optionally, you may use a CoaguChek Capillary tube/bulb to collect the fingerstick blood

sample.

Getting a good result from venous whole blood

For sample collection use a standard blood collection device. Do not use anti-coagulants

(e.g., EDTA, citrate, fluoride, oxalate, or heparin) to collect the blood sample. Venous blood

samples may be collected from a venous line.

If venous samples are collected by venipuncture, note the following:

■ Use a needle at least 23 G (approx. 0.65 mm) or larger in size.

■ Discard the first four drops of blood collected (within the first 10 seconds). Then imme-

diately apply one drop of blood (at least 8 L) directly onto the target area of the test strip.

Ensure that no air bubbles are introduced into the sample.

CAUTION

When washing or disinfecting the patient's finger, allow it to dry thor-

oughly. Residues of water or disinfectant on the skin can dilute the drop

of blood and so produce false results.

Protection against infection

When collecting samples always observe the general precautions and

guidelines relating to blood sampling (see page 14).

Dispose of all test strips used for patient testing in accordance with the

disposal policy of your laboratory or practice (see page 14).

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Roche CoaguChek XS System Betreibershandbuch Seite 81