CHEMISTRY
PAGE EXPIRES: June 2000
SYNONYMS: K, Serum Potassium
COMPONENT TESTS: None (single test)
SCHEDULE: TURNAROUND TIME: 1 day
SPECIMEN AND COLLECTION REQUIREMENTS:
STORAGE AND SHIPPING: Separate serum promptly
CAUSES FOR REJECTION: Improperly labeled specimen; hemolysis
USES: Evaluation of electrolyte balance; monitor diuresis therapy; evaluate water balance, acid-base balance, anion gap, muscular weakness; management of IV therapy
REFERENCE VALUES: (mMol/L)
Sex/Age Group
Ref Low
Ref High
Panic Low
Panic High
MALE/NO SEX
All
3.6
5.0
2.8
6.2
METHOD:
DESCRIPTION AND COMMENTS: Potassium is increased in conditions which result in urinary retention (oliguria, anuria, urinary obstruction, renal failure, etc.); potassium is decreased through inadequate intake; excessive loss (as in diarrhea and vomiting); and movement into cells (as in conditions causing alkalosis).