Clinical Chemistries

What types of samples are used for clim chem?
- Plasma
- Serum
- Whole blood
- Urine
- Feces
How soon should a sample be used after being collected and what should be done with the sample if it cannot be used w/in that time?

Used w/in the hour or frozen
How long should plasma and serum be centrifuged and at what rpm?

10 min @ 2000 - 3000 rpm
What specific component is serum lacking that plasma contains?

Fibrinogen
What can cause hemolysis?
- Moist syringe
- Vigorous mixing
- Forcing through needle
- Freezing whole blood
- Too much pressure on the syringe
What causes lipemia?
- Postprandial samples
- Pancreatitis
- Hypertryglyceridemia
- Hypothyroidism
What does lipemia interfer with?

Spectrophotometric measures
What are 3 different analyzer types and which one is least affected by lipemia?
- Colormetric
- Spectrophotometer
- Dry chemistry (least affected)
Who requires maintenance logs for QC?

OSHA & AAHA
When is a simple dilution performed?

When a serum chemistry is too high to read on the machine
What enzymes are released from damaged hepatocytes?
- Alanine aminotransferase (ALT)
- Aspartate aminotransferase (AST)
- Sorbitol dehydrogenase (SDH)
- Glutamate dehydrogenase (GLDH)
What enzymes are associated with cholestasis?
- Alkaline phosphatase (ALP)
- Gamma glutamyltranspeptidase (GGT)

Author

anniles

162045

Card Set

Clinical Chemistries

Description

Procedures, components of clin chem

Updated

2012-07-11T03:40:42Z

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