LeadCare
®
II User's Guide 5-3
Troubleshooting Results Above the Target or Expected Value
Possible causes include:
• Contamination of blood sample.
• Excess blood on the capillary tube.
• Sample not mixed properly.
• The analyzer is not calibrated properly.
See detailed precautions below:
Blood Sampling
• Lead is widespread in the environment. It is easy to contaminate a blood sample.
Thoroughly clean the collection site with soap and water followed by a clean
alcohol wipe prior to venipuncture. Use clean powder-free gloves during testing
and keep your gloved hands clean.
• Make sure you are using lead-free collection devices.
• Make sure the capillary tube is filled properly. Be sure to wipe excess blood from
the capillary tube with a downward motion. The accuracy of the test depends on
filling the capillary tube with 50 µL. Excess blood on the outside of the capillary
tube will tend to produce higher blood lead results.
Blood Sample Preparation
• Do NOT use clotted blood. If there are clots in the blood, obtain a new sample.
• Make sure to transfer 50 µL of blood into the treatment reagent. Wipe the end of
the capillary tube with a gauze pad, using a downward motion before adding the
blood to the treatment reagent.
Equipment Setup, Calibration and Testing Materials
• Check the expiration date on the test kit. Do NOT use test kit materials that are
beyond the expiration date. When calibrated properly the analyzer will not initiate a
test with expired sensors.
• Make sure the analyzer is calibrated properly. Use the calibration button supplied
with the test kit in use. When processing the sample, check to make sure the code
on the analyzer screen matches the code of the calibration button for the test kit.
• Make sure you are using lead-free collection devices.
Testing Conditions
• Operate the analyzer only within the specified humidity range: (12 to 80% Relative
Humidity).
• Make sure that the analyzer and the test kit are maintained at a constant
temperature. If you move any part of the system from one place to another, (for
example, from outside into a laboratory) wait for the analyzer and components to
reach a stable temperature.
To Next Page
Loading...