Quick Cards 12

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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


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