By: Khulood Hussein

HEMATOCRIT:THE % OF VOLUME OF THE PACKED RED BLOOD CELLS FOLLOWING CENTERFUGATION.

Uses of hematocrit test

• Diagnosis of anemia and polycythemia• Calculation of blood volume

Normal values

It differs according to sex, age and other factorshowever the average range is:

•Adult Female 37-47.Adult male 41-51.

materials

• Microhematocrit centrifuge.• Heparnized capillary tube.• Microhematocrit reader.• Sealing material.• Equipment for sterile finger puncture.

CONDITIONS THAT DECREASE HT LEVEL :ALL TYPES OF ANEMIAPREGNANCYEXCESS WATER INTAKESEX PREDILECTION

CONDITIONS THAT INCREASE HT LEVEL:ALL CASES OF POLYCYTHEMIANEWBORN AND INFANTSHYPOXIAHEMOCONCENTRATION.