APPENDIX IX
977
TABLE IX-1 (
con tin u ed)
Component
Present Reference
Interval
(Examples)
Present
Unit
Conversion
Factor
SI
Reference
Interval
SI Unit
Symbol
Significant
Digits
Suggested
Minimum
Increment
Urea nitrogen (U)
1 2
.
0
-
2 0 .0
Diet dependent
g/24 h
35.70
450-700
mmol/d urea
XX0
10
mol/d
Urobilinogen (U)
0.0-4.0
mg/24 h
1.693
0
.
0
-
6 .8
jumol/d
X.X
0.1 Mntol/d
Valproic acid (P)—therapeutic
50-100
mg/L
6.934
350-700
Mmol/L
XX0
lOjUmol/L
Vanillylmandelic acid (VMA) (U)*
<
6 .8
mg/24 h
5.046
<35
Mmol/d
XX
1 Mmol/d
Vitamin A (retinol) (P, S)
10-50
JUg/dL
0.03491
0.35-1.75
jttmol/L
X.XX
0.05 Mmol/L
Vitamin Bj (thiamine
hydrochloride) (U)
60-500
JU.g/24 h
0.002965
0.18-1.48
jltmol/d
X.XX
0.01 Mmol/d
Vitamin B
2
(riboflavin) (S)
2.6-3.7
jUg/dL
26.57
70-100
nmol/L
XXX
5 nmol/L
Vitamin B
6
(pyridoxal) (B)
20-90
ng/mL
5.982
120-540
nmol/L
XXX
5 nmol/L
Vitamin B
I2
(cyanocobalamin)
(PS)
2 0 0 -1 0 0 0
pg/mL
ng/dL
0.7378
7.378
150-750
pmol/L
pmol/L
XX0
10 pmol/L
Vitamin C (see ascorbate) (B, P, S)
—
—
—
—
—
—
—
Vitamin D
3
(cholecalciferol) (P)
24-40
jUg/mL
2.599
60-105
nmol/L
XXX
5 nmol/L
25 OH-cholecalciferol
18-36
ng/mL
2.496
45-90
nmol/L
XXX
5 mmol/L
Vitamin E (alpha-tocopherol) (P, S)
0.78-1.25
mg/dL
23.22
18-29
jUmol/L
XX
1 Mmol/L
Warfarin (P)—therapeutic
1.0-3.0
mg/L
3.243
3.3-9.8
Mmol/L
XX.X
0.1 Mmol/L
Xanthine (U)—hypoxanthine
5-30
mg/24 h
mg/24 h
6.574
7.347
30-200
Mmol/d
Mmol/d
XX0
XX0
10 Mmol/d
10 Mmol/d
D-xylose (B) (25-g dose)
30-40
(30-60 min)
mg/dL
0.06661
2.0-2.7
(30-60 min)
mmol/L
X.X
0.1 mmol/L
D-xylose excretion (U)
(25-g dose)
21-31
(excreted in 5 h)
%
0 .0 1
0.21-0.31
(excreted in 5 h)
1
0.XX
0 .0 1
Zinc (S)
75-120
Mg/dL
0.1530
11.5-18.5
Mmol/L
XXX
0.1 Mmol/L
Zinc (U)
150-1200
Mg/24 h
0.01530
2.3-18.3
Mmol/d
XX.X
0.1 Mmol/d
*Source:
A m e r ic a n J o u r n a l o f C lin ic a l P a th o lo g y
87, 140 (1987).
.. .
,
,
,
,
,
_c
,
[ Umol/L (urine creatinine)
„T
^ 1.73 (where A is the body surface area
'Creatinine clearance (corrected lor body surface area) =
— ——7
-------------- ——-x mL/s x —— \
<,
\jttmol/L (serum creatinine)
A
m square metres [mr])
*This is a misnomer, but because of its popularity the name VMA has been retained in this publication. In many publications it is being referred to as
4-hydroxy-3-methoxy mandelic acid.
