We've all had the occasional black poop, and usually, it's nothing to worry about â food additives like the dye that turns licorice black can tint your poop, too, and in some cases, Pepto-Bismol (really, again?) can even turn your poop black.
4. My report mentions giant platelets.. Giant platelet is a term used to describe platelets that are abnormally large, i.e., as large as a normal red blood cell. These may be seen in certain disorders such as immune thrombocytopenic purpura (ITP) or in rare inherited disorders such as Bernard-Soulier disease.. Mean platelet volume (MPV) and platelet distribution width (PDW) are calculations performed by automated blood analyzers. MPV reflects the average size of platelets present in a person's sample of blood while PDW reflects how uniform the platelets are in size.
Applications. Typically, the mean platelet volume ranges between 7.2 to 11.7 fL. This is roughly equivalent to tiny spheres that range in size from 2.65 to 2.8 micrometer in diameter. Any value of the mean platelet volume outside this range is indicative of an underlying clinical process. Platelets whose mean platelet volume is above the normal range are called macro-thrombocytes while those below the normal range are micro-thrombocytes. The table below lists the different conditions where mean platelet volume may vary.