Chapter 13 Flashcards
Nonblood specimen labeling and handling
- Should be labeled with same patient information as blood specimens
- Labeling should include type and/or source of specimen– Type: Swab Source: Throat
- Label should be applied to container – NOT THE LID
- Familiarity with handling requirements is needed to protect integrity of specimen & ensure accurate test results
- All body substances are potentially infectious
- Standard precautions must be observed in handling them
urine
– Most frequently analyzed nonblood body fluid
– Readily available, easy to collect, & inexpensive to test
– Provides information about many of body’s major metabolic functions
– Can be used to monitor wellness
– Must be appropriately collected to provide accurate results
– Specimen collection instructions are the responsibility of the lab
common urine tests
– Routine urinalysis (UA)
– Culture & sensitivity
– Urine cytology studies
– Urine drug screening
– Urine glucose & ketone testing
– Urine pregnancy testing
– Other urine tests
types of urine specimens
– Random
– First morning/8-hour
– Fasting
– Timed
suprapubic aspirate collection
Specimen is collected by the physician by needle aspiration or in-dwelling catheter through the abdominal wall
urine collection on children that aren’t potty trained
collected by placing and adhesive bag over the genital region
amniotic fluid
– Clear fluid that fills membrane surrounding & cushioning fetus
– Collected after 15 weeks gestation
– Obtained by physician in transabdominal amniocentesis
– Needle is inserted into mother’s abdominal wall into uterus
– About 10 mL of fluid from amniotic sac is aspirated
– Analyzed to detect genetic disorders & problems in fetal development
– Must be collected in sterile container, protected from light, & delivered to lab ASAP
cerebrospinal fluid (CSF)
– Clear, colorless liquid that surrounds brain & spinal cord
– Specimens are obtained by physician via lumbar puncture
– Used to diagnose meningitis, tertiary syphilis, multiple sclerosis
– Most common tests are cell count with differential, culture, total protein, glucose
Gastric Fluid/Gastric Analysis
– Examines stomach contents for abnormal substances
– Measures gastric acid concentration to evaluate production
Basal gastric analysis (phlebotomist only assists)
- Tube is passed through mouth & throat (or nose & throat) into stomach after fasting
- Sample of gastric fluid is aspirated
- Sample is tested to determine acidity prior to stimulation
- Stimulant is administered by IV
- Several more samples are collected at timed intervals
Nasopharyngeal Secretions
– From nasal cavity & pharynx
– Cultured to detect presence of microorganisms
– Collected using sterile Dacron or cotton-tipped flexible wire swab
– Swab is inserted into nose & passed into nasopharynx
– It is rotated, removed, placed in sterile container, labeled, sent
saliva
– Fluid secreted by glands in mouth
– Used to monitor hormone levels & detect alcohol & drug abuse
– Can be collected quickly & easily in a noninvasive manner
semen
– Sperm-containing fluid discharged during male ejaculation
– Analyzed to assess fertility or effectiveness of sterilization
– Examined for forensic reasons in criminal sexual investigations
– Collected in sterile containers, kept warm, & protected from light
Serous Fluid
– Found between double-layered membranes enclosing pleural, pericardial, & peritoneal cavities
– Can be aspirated for testing purposes by physician
– Types of serous fluid
sputum
– Mucous or phlegm ejected from trachea, bronchi, & lungs
– Collected for diagnosis or monitoring of lower respiratory tractinfections (tuberculosis)
– First morning specimens are preferred (larger volume)
– Collect at least 1 hr after a meal to avoid gagging or vomiting
– Patient removes dentures & gargles w. water
– Patient takes 3 or 4 deep breaths & then coughs forcefully,expelling sputum into container
