Label Information and Courses from MediaLab, Inc.

This electrophoresis gel displays the migration patterns for a person with normal hemoglobin distribution. Normally Hb A is present in excess of 97% with the remaining being made up of Hb A2 and Hb F.Here you can see the large band of Hb A with a faint band in the Hb F and Hb A2 regions.Controls for A and F and A, S, and C are included.(AF and ASC are simply labels for the controls and do not indicate order of migration.)

The definitive identification of C. septicum can be made using a profile of biochemical reactions, as is contained in the RapID ANA strip (see photograph). The upper set of tubules are reactions before addition of reagents; the bottom set of reactions after reagents are added.The upper set of letter codes is used to read the reactions before addition of reagents; the lower set of labels indicate the tests to read following addition of reagents.Of all the reactions included, only ONPG and NAG in the upper set are positive.The biotype number derived from this profile of reactions, 014000 codes for Clostridium septicum, thus confirming the identification.

Here are the criteria for the preparation of tables, as specified by the Journal of Clinical Laboratory Science: Write table titles at the top of the table. Number tables sequentially with Roman numerals. Include the following information in a title, whenever possible: who, what, where, why and when. Put the independent variable in the left column, and the dependent variable in the right, if you are listing data with independent and dependent variables. Label each column with the appropriate units. Adequately space tables that appear on the same page. Example:Table I Patient specimens analyzed for blood urea nitrogen on the Dimension RxL and the Vitros 250 at City Hospital Sample # RxL (mg/dL urea) Vitros 250 (mg/dl) urea 1 8.8 8.8 2 11.2 10.0 3 12.4 13.6 4 16.2 13.2 5 20.0 21.2 6 25.0 20.0 7 28.8 26.2 In this case, the Dimension RxL is the "reference method" and is considered the independent variable, while the Vitros 250 is the "test method" and is considered the dependent variable.

Minute-size fractions achieved in two-dimensional electrophoresis, IEF and PAGE with SDS, and bands from electrophoresis of nucleic acids are detected differently than protein electrophoresis fractions. Labeled polypeptide probes are used to detect these proteins; labeled single-stranded nucleic acid fragments are used for the detection of nucleic acids. Each probe is made with a label designed to generate a detectable signal. The label is bound to a probe and a system is created such that the signal is visualized when the probe is bound to the target.The most common labels are radioactive isotopes and fluorescence dyes. Chemiluminescence and color or ultraviolet absorbance are also used.

Detection techniques can vary in both direct and amplified methodologies and can include labeling either the probe or the target molecule of interest:Chemiluminescence: Release of light energy at the end of a chemical reaction that is detected by a luminometer. Uses a label such as acridinium ester. Electrophoresis: movement in a matrix such as a gel that is caused by an electrical field.Enzyme: Uses enzyme and substrate principles to label the appropriate target or probe. Can be combined with fluorescence or dyes for detection.Fluorescence: Molecules that emit light at a longer wavelength when excited at a shorter wavelength. Detection techniques include fluorescent staining of nucleic acids as well as fluorescent labeled probes that are measured in a fluorometer or with fluorescent polarization.Radioactivity: Uses a labeling technique where the radioactive label is then measured in a scintillation counter. The earliest assays utilized radioactive decay.

The subject of screening for hereditary hemochromatosis (HH) is controversial and is currently being debated in the medical literature. Using laboratory tests to screen the asymptomatic general population is currently not recommended due to issues of testing costs, low genetic penetrance, and the possible risk of discrimination. Targeted case finding in select high risk populations such as men of Northern European ancestry may be a better approach to screening. (12)Molecular-based (DNA) assays required for confirmation of HH are costly when used for general population screening. Because recent studies have shown that a high percentage of persons with C282Y mutations do not develop iron overload or HH-related clinical conditions, screening for these mutations may falsely label an individual with a disease diagnosis. At the present time, it is impossible to determine which homozygotes or heterozygotes for HFE mutations will eventually develop iron overload. Furthermore, there is potential risk of discrimination in obtaining health insurance for persons identified as having genetic disorders.In contrast, some experts do advocate for screening the general population. Mutations associated with HH are very common in Caucasians in the US. Individuals who know they carry mutations associated with HH may benefit from periodic testing for iron overload. Finally, laboratory tests that assess iron status are relatively inexpensive, widely available, and offer one approach to screening for phenotypic expression of HH. Screening first-degree family members of a person with documented HH is generally considered to be worthwhile. Early detection of HH in relatives with common mutations may permit treatment before the development of substantial iron overload and related disease due to organ damage.

The universal biohazard symbol warns you of the presence of biohazardous materials.Red bags or containers, with or without the biohazard label, also indicate the presence of biohazardous contents.

There was no guarantee that workers would be told about the chemical hazards they might face on the job. Container labels and warning sheets did not always give enough information on potential hazards, what to do in an emergency, or where to turn for help.

Read the manufacturers' labels and MSDS sheets and follow the instructions and warnings. Access pertinent safety information through your supervisor. If you detect any potential hazards either in the facility or in your work procedures, contact your supervisor as soon as possible.

The label will also describe: Any important storing or handling instructions. The personal protective equipment you must wear when working with the chemical.

Like the manufacturer's label, the first section lists specific information about the chemical, including: Chemical name Name under which it is shipped Manufacturer's name, address, and phone number

Also remember to: Learn basic first aid measures. Read chemical labels. Read MSDS. Follow warnings and instructions. Use the correct protection. Practice sensible, safe work habits. Be knowledgeable about your laboratory's Chemical Hygiene Plan and the location in your laboratory of all reference materials on the hazards, safe handling, storage, and disposal of hazardous chemicals, including the location of Material Safety Data Sheets.

Formaldehyde has a manufacturer's label on its container indicating the hazards associated with it.Read this label carefully!

Formaldehyde containers have a manufacturer's label indicating the hazards associated with its use. These labels include name and address of the manufacturer or distributor, and appropriate hazard warnings. Formalin containers must always be appropriately labeled.

According to federal and international regulations, all personnel who are involved in the packaging and shipping of infectious materials are required to have training in these procedures. This includes anyone who: Packages, labels, and/or marks the package Is responsible for classifying the materials Is responsible for documenting the package contents on a shipping declaration form, air waybill, etc. Transports hazardous materials by vehicle, plane, or vessel

If multiple primary receptacles are placed in a single secondary packaging, they must be either individually wrapped or separated so as to prevent contact between them.The primary receptacle or the secondary packaging must be capable of withstanding, without leakage, an internal pressure producing a pressure differential of not less than 95 kPa (13.8 lbs/in2) because the package may be placed into an unpressurized storage compartment in a cargo aircraft. This must be verified when choosing packaging for shipping either category A or category B substances by aircraft. It is also recommended if shipping by ground. An evacuated blood collection tube that has remained unopened qualifies as a 95 kPa container. The smallest surface of the outer packaging must be at least 100 mm X 100mm (3.9 inches).Other dangerous goods must not be packed in the same packaging as Division 6.2 infectious substances unless they are necessary for preservation of the specimen (e.g., formalin). A quantity of 30 mL or less of formalin or other dangerous goods included in hazard Classes 3, 8, or 9 (flammable liquids such as alcohol; corrosives such as acids or bases; or miscellaneous hazardous materials) may be packed in each primary receptacle containing infectious substances. A quantity greater than 30 mL will require appropriate hazard labels on the package.

Packages that contain category B substances must exhibit these labels:Proper Shipping NamePackage Mark (UN 3373 Label)The responsible person must be available during regular business hours. Placing this information on the package is optional with category B substances. The information may instead be provided on a written document such as an air waybill.

Label specimens at the bedside according to your institution’s standard procedures, or apply preprinted labels.Proper labeling is the single most critical task you are asked to perform.

Collect blood into an appropriate tube.Label specimens appropriately.Make sure bleeding has stopped. Apply an adhesive bandage if necessary.Discard sharps appropriately.

The Ident-A-Blood (™Hollister) or other similar systems (shown here) help assure that each patient gets the correct blood products. These systems consists of a card with matching numbered labels, and an armband.

The work flow of any medical laboratory involves these basic steps: Physician orders lab tests. Order is received in lab. Work list and labels generated by lab. Phlebotomist is dispatched to patient.

You may be required to measure the temperature of the urine, and to check it visually for tampering.Apply a tamper-evident seal to the specimen, and label it appropriately in the presence of the donor individual.

To ensure the safety of those performing patient testing, controls do not contain HIV or the hepatitis B virus. Manufacturers place the same batch of control material into small vials. This allows only a small portion of the control to be handled while the remainder is stored until needed. Storage information for controls is printed on the label. These instructions should be followed carefully in order to prevent contamination or false results.

Hidden errors are those that cannot be detected or corrected by the laboratory analyst prior to testing. Most often these errors can be prevented by the phlebotomist following correct venipuncture procedure for every procedure, every time.Hidden errors include hemoconcentration, incorrect order of draw, and (the most serious of all errors) misidentification of patient or specimens. Because these errors often are unknown, the analyst may inadvertently report erroneous patient results which could be harmful to the safety and well-being of the patient. Condition What is it? How does it happen? What is the Result? Hemoconcentration Blood pools at site of venipuncture Tourniquet is applied for a prolonged period of time Test results may be inaccurate because blood components move between blood and tissues Pouring Blood between tubes Mixing contents of two or more tubes Removing top of tube to combine contents of one tube with another Inaccurate test results due to over or under dilution or incorrect anticoagulant Clots form due to lack of mixing Patient may have to be redrawn Incorrect patient identification and incorrect specimen labeling Using the wrong name to label a specimen Failure to positively identify EVERY patient using 2 unique identifiers BEFORE beginning venipuncture Failure to label EVERY specimen in the presence of the patient Failure to concentrate fully on the task Results reported to caregiver for wrong patient Compromises patient care; may be life-threatening