Test Overview
Test Methodology

Direct current detection method with coincidence correction. Hemoglobin is a non-cyanide based method read photometrically at 555 nm.

Test Usage

Blood count analysis of WBC, RBC, Hematocrit, Hemoglobin, Platelet, and MCV in the O.R setting is useful for determining blood product usage during and immediately following surgery.

Reference Range *

Reference ranges are available in the Sysmex XP-300 test procedure located on the POC website: https://www.pathology.med.umich.edu/point-of-care.

Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

•Specimens must be free of clots and fibrin strands.
•Leukocyte aggregation may report a falsely decreased WBC.
•Falsely increased WBCs may be caused by PLT clumps, cryoprotein,cryoglobulin, fibrin, and giant platelets.
•Samples stored at room temperature more than 4 hours may exhibit an increase in MCV. RDW-SD, HCT, and MPV, and decrease in MCHC and total WBC.
•Lipemia, icterus, cold agglutinins, RBC fragments, lyse resistant RBCs, giant platelets, abnormal plasma proteins, clumped platelets, and fibrin strands may affect test results.

Test Details
Analytic Time

45 seconds

Soft Order Code
MiChart Code
OR Hematology, Point of Care
Point of Care
Point of Care
Specimen Requirements
Collection Instructions

Collect whole blood in EDTA tube.

Special Handling

Sample must be tested within 4 hours of collection.

Normal Volume
3 mL whole blood
Minimum Volume
1 mL whole blood
Rejection Criteria
Specimens older than 4 hours, and/or containing clots or fibrin strands
Additional Information

For more test specific information, please refer to the test procedure found on the Michigan Medicine POC website: https://www.pathology.med.umich.edu/point-of-care

CPT Code
WBC (6690-2), RBC (771-6), HGB (718-7), HCT (4544-3), MCV ( 787-2), PLT (777-3)
NY State Approved