Quick Cards 12
What does PTH do to calcium and phosphorus levels?
Calcium increases Phosphorus decreases
What is the role of VLDL?
Carries triglycerides from liver to body cells
What analyte will show a false increase if patient smokes before the test?
Ammonia
A huge white pellet after centrifugation of a urine sample is usually what?
Amorphous phosphate
What is a chloride shift?
Chloride concentration decreases due to HCO3 exchange. HCO3 leaves RBC to buffer blood, Cl enters into the RBC to balance the charge.
What is the difference between Cushings DISEASE and SYNDROME?
Cushings Syndrome = primary disorder. Tumour of adrenal cortex = increase in cortisol production Cushings Disease = secondary disorder. Tumour of anterior pituitary = increase in ACTH
Which chemistry analytes will be DECREASED if centrifugation of a specimen is delayed?
Glucose, Ionized calcium, Bicarbonate
Cysteine crystals look like what?
Hexagonal plates
In blood gas, what is the pO2 and pCO2 ref ranges?
pO2 = 80-100 mmHg pCO2 = 35 - 45 mmHg
What does Bias measure?
Accuracy
What is the specific gravity ref range?
1.010 - 1.025
Urine contaminated with bleach will show false positive results in what?
Blood and glucose
Renal failure can affect calcium levels how?
Hypocalcemia
What will alcohol ingestion prior to a lipid test do?
Increase: Total cholesterol, HDL Marked increase: Trigs Decrease: LDL
Which type of diabetes is associated with non-ketotic comas?
Type 2 diabetes is associated with HONK (hyper osmolar non-ketotic coma)
A marked increase of Calcium oxalate in urine is indicative of what?
Ethylene glycol ingestion
What are some conditions associated with a decreased anion gap?
Nephrotic syndrome, hemorhage, liver failure
What conditions are associated with decrease in total protein?
Nephrotic syndrome, liver disease, pregnancy, burns
Which chemistry analytes will be INCREASED if centrifugation of a specimen is delayed?
Potassium, LD, Phosphorus, Magnesium, Ammonia, Creatinine, ALT, AST
What does CV measure?
Precision
Urine drug screens can be added on to refrigerated specimens up to what time limit?
Up to 48 hours