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Potassium

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Total cards: 9•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (9)

#1
Front (Question)

activated by K+ ions in the sample and subsequently catalizes the dephosphorylation of phosphoenol- pyruvate to pyruvate.

Back (Answer)

Pyruvate kinase

#2
Front (Question)

In a second step pyruvate is transformed to

Back (Answer)

Lactate under consumption of a NADH analogue

#3
Front (Question)

The rate of the signal decrease measured at ______ is proportional to the amount of potassium in the sample.

Back (Answer)

340 nm

#4
Front (Question)

R1:

Back (Answer)

Buffer NADH analogon Phosphoenolpyruvate ADP Lactate dehydrogenase

#5
Front (Question)

R2:

Back (Answer)

Buffer Pyruvate kinase

#6
Front (Question)

Specimen

Back (Answer)

Serum or lithium heparin plasma

#7
Front (Question)

Interfering Substance

Back (Answer)

Ascorbate Bilirubin, conjugated Bilirubin, unconjugated Lipemia Hemoglobin Hemolysis Sodium Ammonia Calcium Magnesium Manganese Phosphate Zinc Iron Copper

#8
Front (Question)

Conversion factor

Back (Answer)

3.91 mg/dL

#9
Front (Question)

Reference Range

Back (Answer)

In Plasma: 3.6 – 4.8 mmol/L In Serum: 3.5 – 5.1 mmol/L