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Secretion Information and Courses from MediaLab, Inc.

These are the MediaLab courses that cover Secretion and links to relevant pages within the course.

Learn more about laboratory continuing education for medical technologists to earn CE credit for AMT, ASCP, NCA, and state license renewal and recertification. Or get information about laboratory safety and compliance courses that deliver cost-effective OSHA safety training and continuing education to your laboratory's employees.

Laboratories Individuals

CLIA Blood Banking Review
Which of the following activities will put an employee at risk for exposure to a Bloodborne Pathogen (BBP)?View Page

CLIA General Laboratory Review
The normal range for urine pH is:View Page

Current Topics in Clinical Microbiology
Review 1

Newfield RS. Vargas I. Huma Z.: Eikenella corrodens infections. Case report in two adolescent females with IDDM. Diabetes Care. 19:1011-3, 1996OBJECTIVE: To alert physicians caring for patients with diabetes to the microorganism Eikenella corrodens and to discuss the appropriate preventive and therapeutic measures to take against this potentially morbid opportunistic Gram-negative bacilli.CASES: We present two cases of extra-oral E. corrodens infections in adolescent females with IDDM. The first patient had diabetes of 4 years' duration, which was moderately well controlled. Chronic finger biting resulted in a complex felon that evolved gradually and worsened while the patient received cephalexin orally. Delay in seeking further intervention resulted in necrosis of her distal fingertip and nail bed. The second patient had poorly controlled diabetes for 5 years. She developed an acute thigh abscess at an insulin injection site that resolved after drainage and intravenous antibiotics.CONCLUSIONS: E. corrodens commonly inhabits the human oral cavity and becomes a pathogen mostly when host defenses are impaired, causing abscesses and infections that are at times fatal. Patients with IDDM are compromised hosts and with daily microtrauma to their skin via glucose monitoring and insulin injections, are prone to develop E. corrodens infections that can be introduced through oral secretions by licking or biting their skin. Educational efforts aimed at preventing exposure of traumatized skin to oral secretions can minimize the risk of E. corrodens infections in compromised hosts.Early intravenous administration of antibiotics, bearing in mind E. corrodens resistance to clindamycin, metronidazole, and other antibiotics, coupled with prompt surgical intervention, is essential in successfully managing E. corrodens infections.

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Normal Peripheral Blood Cells
Glossary of Terms A through M.

Antibody - A modified type of serum globulin synthesized by lymphoid tissue in response to antigenic stimulus. By virtue of specific combining sites each antibody reacts with only one antigen. Anucleate - Having no nucleus. Azurophilic granules - The well-defined large reddish granules (lysosomes) which may be present in large lymphocytes. They are called "azurophilic granules" because they stain blue with the azure stains which were originally used. Basophilic granules - Specific granules present in the cytoplasm of basophils. These granules are large and stain purple-black due to their strong affinity for basic stain. B-cell - Bone marrow derived lymphocytes which produce humoral antibodies. Biconcave - Having two concave surfaces. Cellular Immunity - The capacity of a small proportion of lymphoid population to exhibit response to a specific antigen. Chromomere - The centrally located granular portion of the platelet. Clone - A population of cells descended from a single cell. Delayed Hypersensitivity - (part of cellular immunity) that develops slowly over a period of 24-72 hours after an antigenic stimulus. It consists of an accumulation of cells around small vessels and/or nerves. Example: Tuberculin skin test reaction. Digestive Enzyme - A substance that catalyzes or accelerates the process of digestion. Eosinophilic Granules - Specific granules present in the cytoplasm of eosinophils. These granules are large, refractile spheres which stain reddish-orange due to their strong affinity for acid stain. Erythrocyte (red blood cell, RBC) - One of the elements found in peripheral blood. Normally the mature form is a non-nucleated, circular, biconcave disk adapted to transport respiratory gases. Fixed Macrophage - A phagocyte that is non-motile. Free Macrophage - An ameboid phagocyte present at the site of inflammation. Graft Rejection - A transplanted tissue that is rejected by the body's antibodies. Graft vs. Host Reaction - A complication that occurs when an implanted piece of tissue, which contains antibodies, rejects the host's tissue. Granulocyte - A leukocyte which contains granules in its cytoplasm, i.e., neutrophilic, eosinophilic, or basophilic granules. Half-life - is the length of time it takes for half of the cells circulating at a given time to leave the blood for the tissues. Hemocyte - Any blood cell or formed element of the blood. Hemostasis - A mechanism of the vascular system to arrest an escape of blood. It involves an interaction between blood vessels, platelets, and coagulation. Heparin - A mucopolysaccharide acid which, when present in sufficient amounts, functions as an anticoagulant by inhibiting thrombin. Histamine - A powerful dilator of capillaries and a stimulator of gastric secretions. Humoral Immunity - Acquired immunity produced after response to an antigenic stimulus in which B cells produce circulating antibodies. Hyalomere - the clear, blue non-granular zone surrounding the chromomere of a platelet. Immune Response - The interaction of a cell and an antigen that results in a proliferation of the cell and a capacity to produce antibodies. Isotonic Fluid - A fluid whose elements have an equal osmotic pressure. Leukocyte (white blood cell, WBC) - One of the formed elements of the blood; involved primarily with the body's defense. Lysosome - A microscopic body within cell cytoplasm; contains various enzymes, mainly hydrolytic, which are released upon injury to the cell. Megakaryocyte - A giant cell of the bone marrow from which platelets are derived. Mononuclear - A cell having a single nucleus.

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OSHA Bloodborne Pathogens
Who is infected?

Patients with Hepatitis B and other bloodborne infections can appear healthy, so you can't tell whose blood is infectious.So treat all:blood, body fluids, secretions (except sweat), excretions, non-intact skin, and mucous membranes as if they were infectious.That's what the term Standard Precautions means.

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Spread of HBV in the community(2)

Body fluids most likely to transmit HBV are: Blood Semen Vaginal Secretions Pleural Fluid Peritoneal Fluid Pericardial Fluid Cerebrospinal Fluid Synovial Fluid Amniotic Fluid Saliva in dental procedures Any fluid visibly contaminated with blood

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Phlebotomy
Discussion

At John’s particular hospital, a stop sign on the door means not only means respiratory isolation, but also that special precautions for tuberculosis are in effect. At this point, John should obtain a a special particulate respirator mask which will be available outside the patient's room. He should put on the mask before entering the room, wash his hands before and after contact with the patient, and wear gloves and appropriate protective clothing during all contact with the patient. TB and most respiratory infections are transmitted via droplets in the air from respiratory secretions – thus the need for the masks.

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Standard precautions continued

Potentially infectious body fluids include: Blood, Semen, Vaginal Secretion, Peritoneal, pericardial and pleural fluids, and Saliva Sweat and tears are not generally considered infectious. It is important to remember that bloodborne pathogens are not transmitted by casual contact, like a handshake.

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Semen Analysis
Composition of Semen

Semen is produced as a combination of secretions from the different regions of the male reproductive tract. Each fraction differs in chemical composition and function. The combination of these fractions during ejaculation results in the optimal environment for transporting sperm to the endocervical mucus in the female. Spermatozoa are produced in the testes. They mature in the epididymis. The testes also produce testosterone and inhibin.Fluid from the seminal vesicles accounts for approximately 70% of semen volume. The seminal vesicles are the source of fructose in semen. Fructose is used by the spermatozoa as an energy source.The prostate gland supplies about 20% of the volume of semen. Its fluids include acid phosphatase and proteolytic enzymes that lead to coagulation and subsequent liquefaction of semen. The prostate also contains most of the IgA found in semen.The bulbourethral gland produces mucoproteins that make up about 5% of the volume of semen.

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pH

The pH of normal fresh semen is 7.0 or greater. Acid conditions can lead to reduced sperm motility and viability.Secretions of the different glands of the male reproductive tract contain fluids of different pH. The portion of semen that originates in the seminal vesicles is basic, that of the prostate gland is acidic. If the pH is low it could mean that there is an obstruction in the ejaculatory duct below the level of the seminal vesicles or it could signal absence of the vas deferens. Low pH is often associated with low volume since both basic pH and much of semen volume are products of the seminal vesicles. Measuring pH can thus help a clinician determine the cause of azoospermia (absence of sperm in semen).The pH is measured using pH testing strips. A drop of semen is placed on a pH strip and allowed to develop full color. Final color is compared to a standard. For the most accurate results, use test strips with a sensitivity in the basic range, for example from 6.0 to 10.0.

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