Lab Values Flashcards
BUN
Adult 10-20mg/DL
8-24mg/DL
Elderly may be slightly elevated
>100 mg/DL (indicates serious impairment of renal function )
BUN is directly related to the metabolic function of liver and the excretory function of kidney. Serves as index of function of these organs. Patients who have elevated BUN levels are said to have azotemia.
Creatinine
Female: 0.5-1.1
Male: 0.6-1.2
> 4mg/DL (indicates serious impairment in renal failure)
Used as approximation of GFR
BNP
<100 pg/ml
Used to identify and stratify patients with CHF.
The higher the levels of BNP, the more severe the CHF
If BNP is elevated, SOB is because CHF, if BNP is normal, the son is pulmonary and not cardiac.
Potassium
3.5-5
Critical value 6.5
Serum K concentration depends on many factors::
Aldosterone- this hormone tends to increase renal losses of K
Sodium resorption- as sodium is resorbed, k is lost.
Acid/base balance. Alkalotic states tend to lower serum K levels by causing a shift of K into the cell. A idiotic states tend to raise serum K levels by reversing that shift.
RBC
Erythrocytes
Adult male- 4.6-6.2
Woman 4.2-5.4
Child 3.2-5.2
WBCs
Leukocytes
Adult/ 5,000-10,000
Child- 5,000-13,000
Hemoglobin-
Man-13-18
Woman- 12-16
Child 11-12.5
RBC
Erythrocytes
Adult male- 4.6-6.2
Woman 4.2-5.4
Child 3.2-5.2
WBCs
Leukocytes
Adult/ 5,000-10,000
Child- 5,000-13,000
Hemoglobin-
Man-13-18
Woman- 12-16
Child 11-12.5
