Question

How long can a specimen sit before a smear for the differential cell count must be made? Why is it important to run controls when performing a CBC on the Coulter Act Diff 2? What is the principle (how the test “works”) for performing a hemoglobin analysis on the Coulter Act Diff 2? List the hematologic parameters reported by the Coulter Act Diff 2. What is the method the Coulter uses to count cells? Why is it important to mix a sample well before making a smear or running the sample through the Coulter?

Hematology Lab

these questions are about hematology lab

Answer 1

• How long can a specimen sit before a smear for the differential cell count must be made?

It can be kept for 16 hours if refrigerated, and 8 hours if at room temperature.