1What is the goal of home diagnostic testing?
to drive healthcare to a more patient-centered focus
2What are the 3 criteria for selecting diagnostic products?
- appropriateness of testing
- ability to accurately conduct the test and interpret results
- potential interference with test results
3What is defined as hypertension?
BP > 130/80
4Patient education on hypertension improves ___
medication adherence
5What are the 2 areas for blood pressure monitoring at home?
arm and wrist
6What are the 3 advantages of using a BP monitor at home?
"white coat syndrome", assess efficacy of meds outside clinic; improves adherence
7aneroid BP monitor
mostly accurate and reliable; light, portable; good eyesight and hearing required
8digital BP monitor
becoming more accurate with advancing technology, more accurate
9The cuff bladder width should be ___ of the circumference of the arm.
40%
10The cuff bladder should cover ___ of the circumference of the arm.
80-100%
11What are the 2 steps to determine proper cuff size?
- bladder width 40% of circumference of arm
- bladder covers 80-100% of circumference of arm
12What happens if the BP cuff is too small?
falsely high BP
13What happens if the BP cuff is too large?
falsely low BP
14What are the 6 counseling points for home BP monitoring?
- keep a log of readings
- if monitoring therapy, take reading every morning
- watch for changes with medication changes
- avoid tobacco, caffeine, PSE
- do not self-adjust meds
- contact PCP if elevated results
15What are the additional functions of a glucometer?
- memory to store readings
- input meals/insulin administration
16lancets
used to pierce skin to obtain blood sample
can use with lancing device
17The larger the gauge the ___ the needle size.
smaller
18Are lancets reusable?
no
19What is the max range that a glucometer can read?
400-600 mg/dL; after that "error" or "high" - see PCP
20What are some common errors with glucometer use?
- blood sugar too high to be read
- sample too small
- temperature error
- wrong or expired strip
21What are the steps to blood glucose monitoring?
- wash hands
- wipe finger with alcohol wipe and allow to dry
- set hand below heart for 30-60 sec
- place test strip in glucometer
- lance finger
- apply blood drop to test strip and wait for reading
22What are the 4 alternative glucose testing sites?
upper arm, thigh, calf, fleshy parts of hand
23What are the limitations of using an alternative testing area for glucose?
- variation in glucose concentration throughout body
- rapid changes in glucose
24When should you make sure to use a fingertip sample for glucose?
- possible hypoglycemic episode
- history of hypoglycemic unawareness
- site results don't agree with how you feel
25How often should a1c be checked?
every 3 months
26Which pouch should be opened first in A1C Now?
purple; don't open red until ready to use
28What are the symptoms of hypoglycemia?
shakiness, sweating, sudden hunger, tachycardia, confusion
29Rule of 15
instruct pt with hypoglycemia to take 15-20g of glucose and recheck glucose in 15 minutes
30dyslipidemia
elevated cholesterol levels; contributes to atherosclerotic heart disease
31How often should cholesterol be tested?
complete lipid panel every 5 years after age 20
32What does a complete lipid panel include (4)?
total cholesterol, LDL-C, HDL-C, triglycerides
33What is the purpose of home cholesterol tests?
help monitor the efficacy and adherence to diet, exercise, and medication plans; must be fasting for 9h
34What is the exclusion from home cholesterol testing?
excessive bleeding from finger stick
35What are the 4 counseling points for home cholesterol tests?
- avoid high doses of vitamin C
- wash hands thoroughly
- read instructions
- do not excessively milk finger
36When should you refer to PCP for cholesterol?
total cholesterol >200 mg/dL
HDL-C <40
triglycerides >150
37OraQuick
first FDA approved screening for HIV-1 and HIV-2
saliva-based
38How long after use can OraQuick results be read?
20-40 minutes (inconclusive after 40 minutes)
39When can OraQuick be used to test for HIV?
at least 3 months after exposure
40counseling for OraQuick
- need referral for confirmatory test
- counseling available from manufacturer
- counsel on avoiding behaviors that may infect others
41What is the most important part of an OraQuick test?
if positive, link to care
42What cells produce hCG?
trophoblastic cells
43hCG
human chorionic gonadotropic hormone
causes corpus lutteur to continue to produce progesterone and estrogen while the placenta develops
44What hormone is released after the fertilization of an egg?
hCG
45What hormone in the urine is used to detect pregnancy?
hCG
46When is hCG eliminated in the urine?
1-2 weeks after fertilization
47When do home pregnancy tests have the highest sensitivity?
when used 1 week after the first day of the missed period
48Most pregnancy tests advertise to be ___ accurate
99%
495 days before a missed period, pregnancy tests are ___ accurate
33%
50What are the 3 causes of a false positive pregnancy test?
- miscarriage or birth in past 8 weeks
- Profasi (chorionic gonadotropin for injection)
- ovarian cysts
51What are the 4 causes of a false negative pregnancy test?
- preformed on or before first day of missed period
- waxed cup used for urine collection
- refrigerated urine
- diluted urine (test in morning)
52At what time of day should pregnancy tests be used?
in the morning (urine less diluted)
53How should First Response pregnancy tests be used?
hold by thumb grip with absorbent tip in the urine stream for 5-10 seconds
read results after 3 minutes
54What does one pink line mean?
not pregnant
55What do 2 pink lines mean?
pregnant
56What must be present for results to be trusted in ept pregnancy tests?
vertical line in control window
57What does - mean in an ept test?
not pregnant
58What does + mean in an ept test?
pregnant
59What should be done if pregnancy test positive?
assume pregnant and contact PCP/obstetrician
discuss teratogenic medications with PCP
60What should be done if pregnancy test negative?
review testing procedure and ensure proper technique
test again in 1 week if menstruation has not begun
61infertility
medical inability to conceive after 1 year
62When is the best time to conceive?
24-48 hours after ovulation
24 hours after LH surge
63What are the 2 ways to test for ovulation?
basal thermometer or urine ovulation prediction test
64How do urine ovulation tests work?
detect luteinizing hormone (LH) surge
65Clearblue
urine ovulation test
begin using 2-4 days before ovulation in the morning
66What does a circle indicate in Clearblue tests?
not ovulating; test again at same time next day
67What does a smiley face indicate in Clearblue tests?
ovulating; have intercourse in next 48h
68What are the 7 causes of false positives with ovulation prediction tests?
- fertility medications (clomiphene)
- PCOS
- menopause
- pregnancy, breastfeeding
- discontinuation of oral contraceptives
- impaired liver or kidney function
- tetracyclines
69When are urine samples better for drug screening?
low-level, casual use
70When are hair samples better for drug screening?
long-term use
71What are the 2 types of OTC drug screens?
urine and hair
72How do urine drug screens work?
self-contained unit with no handling of urine; fill with urine and wait 5 minutes
73How do hair drug screens work?
mail in 90-120 strands, cut close to scalp
results in 5 days after receipt
74What OTC products can cause a false positive opioid result?
anything containing codeine
75What rx drug can cause a benzodiazepine false positive?
sertraline
76What rx drug can cause an amphetamine false positive?
propranolol
77What should you do with a positive drug screen?
need confirmation test; seek services of drug rehab program
78fecal occult blood test
tests for colorectal cancer
79Colorectal cancer is the ___ leading cause of cancer death in the US.
3rd
80What can blood in stool be a sign of?
colon damage; cancer; internal bleeding; hemorrhoids
81Who should be tested for colorectal cancer?
pts over 50 with history or family history of colorectal cancer, women with history of breast or reproductive cancer, or benign intestinal polyps
82Fecal Occult Blood Test is not a replacement for ___
a colonoscopy
83What color do the sheets turn if abnormal amounts of blood detected in FOBT?
blue
84What 6 things can interfere with FOBT?
- medications that cause bleeding (NSAIDs)
- hemorrhoids or menstrual period
- red meat
- foods high in vitamin C
- foods that discolor stool
- chemicals in toilet
85What are the 5 risk factors for UTIs?
- female
- pregnancy
- diabetes
- urinary stones or obstructions
- history of UTIs
86What are the 2 uses for a UTI test?
- early detection of infection
- confirmation that infection has been cured with antibiotics
87What are the 2 types of UTI tests?
- detects nitrites
- detects nitrites and leukocyte esterase
88Why are nitrites used in UTI tests?
gram negative bacteria reduce nitrates to nitrites in urine
89How is the AZO strip used?
after some urine has passed, hold under stream for 1-2 seconds, then lay flat to dry for 1-2 minutes and compare to chart on bottle
90What are the 2 factors that can cause false positive UTI results?
phenazopyridine and menstruation
91What are the 3 factors that can cause false negative UTI results?
vegetarian diet, tetracycline, and vitamin C
92What are the counseling points for UTI tests?
- test in morning, avoid interference meds/food, do not touch sensor pad
- refer if positive test or if negative, but symptoms persist