Dayyal Dg.

Dayyal Dg.

Clinical laboratory professional specialized to external quality assessment (proficiency testing) schemes for Laboratory medicine and clinical pathology. Author/Writer/Blogger


Hemoglobin is composed of heme (iron + protoporphyrin) and <

Red Cell Indices

19 Jul 2016
Red Cell Indices


03 Jul 2016

Porphyrias (from Greek <

“I can focus my slide under 10×, but not under 40×.”

When the recipient’s ABO and Rh blood groups are determined, the donor blood unit that

APTT is a measure of coagulation factors in intrinsic pathway (F XII, F XI, high molecular
PT assesses coagulation factors in extrinsic pathway (F VII) and common pathway (F X, F V,


The bleeding time

Thrombin time assesses the final step of coagulation i.e. conversion of fibrinogen to fibrin by

This is a newly introduced screening