Collection, of specimens

Collection of specimens. To collect specimens, a specially made net fitted with a bag of Dacron gauze, 30 cm in diameter and 40 cm deep, is used. In order to collect as many worms as possible in a limited period of time, worms are gathered with this net, keeping the already collected specimens at the bottom of the net. When a substantial amount of specimens is collected in the net, the contents are transferred to a bucket containing seawater. At the end of the collection, the specimens in the bucket are separated from the seawater by filtration on a piece of Dacron gauze, and the worms are frozen with dry ice. 

After the collecting of specimens was completed, Moore returned to Delaware with a bag of the sacred mushrooms for analysis, hoping to isolate and then synthesize the active principle in large quantities for the CIA Sidney Gottlieb wrote soon after that if Moore were successful, it was "quite possible that the potentiating molecules "might remain an Agency secret (not published in the scientific literature, unlike most academic discoveries). 

To obtain a sterile urine specimen for culture from an infant, a suprapubic tap is performed. The collection of specimens from older children is done as in adults, using assistance from a parent when this is necessary. 

International Federation of Clinical Chemistry, Expert Panel on Theory of Reference Values. Approved recommendation on the theory of reference values. Part 1. The concept of reference values. J CUn Chem Clin Biochem 1987 25 337-42 Part 2. Selection of individuals for the production of reference values. J Clin Chem Clin Biochem 1987 25 639-44 Part 3. Preparation of individuals and collection of specimens for the production of reference values. J Clin Chem Clin Biochem 1988 26 593-8 Part 4. Control of analytical variation in the production transfer and application of reference values. Eur J CUn Chem Clin. Biochem 1991 29 531-5 Part 5. Statistical treatment of collected reference values Determination of reference limits. J Clin Chem... 

Collection of specimens for serum Al analysis can be a complicating factor. Most of the common evacuated blood collection devices used in phlebotomy today have rubber stoppers that are made of Al silicate. Puncture of the rubber stopper for blood collection is sufficient to contaminate the sample with Al to produce an abnormal concentration of Al. Typically, blood collected in standard evacuated blood tubes... 

Each laboratory should make available to all its users a frequently updated set of detailed instructions for the collection of specimens and for the carrying out of all the tests done, together with information on the interpretation of results. No user should then have to rely unduly on his memory, nor should he have to obtain details on the carrying out of tests from textbooks, where many different descriptions of the same test are often to be found. The number of different containers for specimens should be kept to a minimum, and the label and request forms should be as simple as possible to expedite their proper completion the request form should include a space for entering the time of collection of the specimen. Possible ways of improving and simplifying request forms, and avoiding unnecessary transcription steps in the laboratory itself, have been considered by Lee and Schoen (L2a). 

Solberg, H.E. and PetitClerc, C. (1988). Approved recommendation (1988) on the theory of reference values. Part 3. Preparation of individuais and collection of specimens for the production of reference values. J. Clin. Chem. Clin. Biochem., 26, 593. 

The collection of specimen must be conducted in a suitable location and must contain all necessary personnel, materials, equipment, facilities, and supervision to provide for collection, security, and temporary storage and transportation of the specimen to a certified laboratory. 

Due to the complexity of organic acids correct collection of specimens is most crucial (Table C.5). Samples for organic acid analysis should be frozen as soon as possible and kept and shipped frozen. At room temperature chemical instability causes substantial losses of some important groups of acids, such as oxo acids. For prolonged periods samples should be stored at -80 °C instead of-20°C. 

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