Potassium Flashcards
1
Q
activated by K+ ions in the sample and subsequently catalizes the dephosphorylation of phosphoenol- pyruvate to pyruvate.
A
Pyruvate kinase
2
Q
In a second step pyruvate is transformed to
A
Lactate under consumption of a NADH analogue
3
Q
The rate of the signal decrease measured at ______ is proportional to the amount of potassium in the sample.
A
340 nm
4
Q
R1:
A
Buffer
NADH analogon
Phosphoenolpyruvate
ADP
Lactate dehydrogenase
5
Q
R2:
A
Buffer
Pyruvate kinase
6
Q
Specimen
A
Serum or lithium heparin plasma
7
Q
Interfering Substance
A
Ascorbate
Bilirubin, conjugated
Bilirubin, unconjugated
Lipemia
Hemoglobin
Hemolysis
Sodium
Ammonia
Calcium
Magnesium
Manganese
Phosphate
Zinc
Iron
Copper
8
Q
Conversion factor
A
3.91 mg/dL
9
Q
Reference Range
A
In Plasma: 3.6 – 4.8 mmol/L
In Serum: 3.5 – 5.1 mmol/L
