Blood System Portfolio: Rhesus System

The Rhesus blood system is arguably the second most important blood system behind the ABO system. There are 50 defined blood group antigens, among which the five antigens; D, C, E, c, e are the most significant. Individuals who are Rh positive possess the D antigen and those who are Rh negative lack the D … Continue reading Blood System Portfolio: Rhesus System

Pregnancy and Fetal Testing

There are specific markers that correlate to normal or abnormal fetal health that are important to know. Its also important to understand the normal course of a pregnancy and also the normal circadian rhythm of hormones that are involved in ovulation and a womens' menstrual cycle. Both the anterior pituitary and ovaries are involved in … Continue reading Pregnancy and Fetal Testing

Use of Selective and Differential Media

There are many different types of media that are used in a microbiology laboratory. Generally speaking there are three types of media used; selective, differential, and supportive or nutritive. Selective media are manufactured to support the growth of one type of microorganism while inhibiting the growth of another, in other words, it selectively grows one … Continue reading Use of Selective and Differential Media

Cells Cells Cells!

The immune system is the host defense system against foreign pathogens. It is an extremely adept system comprised of the innate immune system and the adaptive immune system, as well as complement. For more information on those two systems as a whole, review part one of the immune system. This part of the immune system … Continue reading Cells Cells Cells!

The Pseudohyponatremia Debacle

Measurement of electrolytes in a sample of plasma is probably one of the most common tests that is performed. Every patient who gets blood drawn will also get a Chem 7 or CP13 which will include an analysis of electrolytes. There are two different technological approaches to measuring electrolytes, depending on what kind of chemistry … Continue reading The Pseudohyponatremia Debacle