clinical chemistry Flashcards
STAT
immediate, urgent requests, emergency usally less than 1 hour TAT
PRIORITY
important for clinical decisions, usually less than 2 hours TAT
ROUTINE
non-urgent, standard or special tests, generally 4-6 hours
FLUIDS USED ON CC TEST
blood, urine, csf, amniotic fluid, saliva, synovial fluid, pleural fluid, pericardial fluid, and peritoneal fluid.
fluid found in joint cavities
synovial fluid
fluid from the sac surrounding the lungs
pleural fluid
fluid from the sac surrounding the heart
pericardial fluid
ascitic fluid from the abdomen
peritoneal fluid
fluid portion of the blood when centrifuged
serum
serum is 95% composed of what?
water
the 55% that composes blood volume
serum
serum contains the ff.
protein, sugars, vitamins, minerals, lipids, lipoproteins.
the clotting factors of blood clot?
fibrin, platelets
the source of blood analysis
veins, arteries, skin puncture capillary blood
collection method for blood analysis
syringe, evacuated tube, intravenous lines
factors affecting choice of blood source and collection method
analyte under investigation and patient.
substances normally present with a function in the circulation
glucose, TP, albumin, individual proteins, electrolytes, TAG, cholesterol, hormones, vitamins
metabolites-nonfunctioning waste products in the process of being cleared
urea, creatinine, uric acid, ammonia, bilirubin
substances from cells as a result of cell damage
enzymes: LD, ALT, AST, CK, AMS, CGT, ALP & ACP
drugs & toxic substances
antibodies, substances of abuse, therapeutic drugs, poisons
source for blood analysis
veins, arteries, capillary blood (skin puncture)
collection method for blood analysis
syringe, evacuated tube, intravenous lines
factors affecting choice of blood source/collection method
analyte under investigation, patient (vascular status, ease of collection)
first order of draw
blood culture or tube
the color of the first order of draw
yellow or yellow-black top
second order of draw
coagulation tube
the color of 2nd order/coagulation tube
light blue top
third order of draw
non-additive tube
color of 3rd order or non-additive tube
red top
last draw
additive tube
first order of additive tube
sst: red-gray or gold top
what additive tube contains a separator and clot activator?
SST w/c red-gray or gold top
2nd order of additive tube?
sodium heparin: dark green top
3rd order of additive tube?
PST: light green top
what additive tube contains lithium heparin anticoagulant and clot activator?
PST - light green top
4th order of additive tube?
EDTA - lavender top
last order of additive tube?
Oxalate or Flouride w/c is a Light Gray Top
when labeling specimen, it should contain?
2 unique identifiers (name and either birthdate or unique requisition identifier/label)
this area should be avoided as it is difficult to puncture the scar tissue and obtain a specimen?
extensive scars from burns and surgery
this area should be avoided as test results may be affected because of lymphedema.
the upper extremity on the side of a previous mastectomy
this area should be avoided as this would cause erroneous test results.
hematoma
this area should be avoided where the fluid may dilute specimen
iv therapy / blood transfusion
blood should not be drawn from an arm with ____
fistula or cannula
area should be avoided as tissue fluid accumulation alters test result
edematous extremeties
occurs in individual that have been exposed to foreign immunoglobins
Human Anti Animal Antibodies
mouse antibodies
Human Anti Mouse Antibodies
how many minutes is the recommended spin for horizontal, swing-bucket centrifuge?
10 mins
how many minutes is the recommended spin for fixed-angle centrifuge?
15 mins
maximum time limit from the time of collection the physically separation of serum from cell
2 hours
