Normal Lab Values Flashcards
1
Q
BUN
A
Normal = 8-25 mg/dl 6-8 = overhydration, SIADH, liver disease, malnutrition 20-50 = mild azotemia >50 = severe azotemia and renal impairment
2
Q
Serum creatinine
A
Normal = .8-1.4
Children normally lower than women lower than men
3
Q
BUN:Creatinine
A
Normal = 10:1 >20 = pre-, post-renal azotemia, some types of acute glomerular nephritis <20 = acute tubular nephritis, AIN
4
Q
Urine Albumin:Creatinine
A
Normal = 30 mg/g
30-300 mg/g = microalbuminuria
>300 mg = albuminuria, clinical proteinuria
5
Q
GFR (Creatinine clearance estimate)
A
Normal = 75-125 ml/min/1.73m^2 >50 = renal impairment 20-50 = renal insufficiency 5-20 = renal failure 15 - dialysis
6
Q
Urine Sodium
A
Can use random sample
>20 = acute tubular nephrosis
<20 = anything else
7
Q
Fractional Excretion of Sodium (FENa)
A
Can use random sample
>2 = acute tubular nephrosis
<1 = pre- /post-renal azotemia, indicates intact tubular function
May be very high for post-renal obstruction.
8
Q
Urine Osmolality
A
Normal = 800-1,300 mOsm/L 600-800 = minimal impairment 400-600 = moderate impairment 500 Post = <400
9
Q
Urine Specific Gravity
A
Normal = 1010
10
Q
Urine pH
A
5-9
11
Q
Serum WBC
A
4,000 - 10,000/mm^3
12
Q
Hematocrit (Hct)
A
36-45%
13
Q
Hemoglobin (Hgb)
A
12.5-16 g/dl
14
Q
Serum platelets
A
150,000 - 400,000/mm^3
15
Q
Serum Na+
A
134-146
