Lab Reference Ranges

Lab Reference Ranges

A ‘Reference range’ may be defined as the range of values obtained for a particular test in a defined group of individuals.
The term ‘Normal range’, which has frequently been used in the past, is roughly equivalent in meaning to ‘the range of values obtained from a group of healthy individuals’.
Here we have collected only very useful reference ranges to which we have encountered daily in clinical practice.
Here all reference ranges are collected from standard clinical books & are in relevant / traditional units.
lab-reference-ranges


SERUM
ADULT REFERENCE RANGES
ALT  (SGPT)
< 40 U/L
AST (SGOT)
12 – 39 U/L
ALBUMIN
3 – 5 g/dL
TOTAL PROTEIN
6.2 – 7.7 g/dL
ALP
39 – 117 U/L
AMYLASE
25 – 125 U/L
BILIRUBIN (Total)
< 1 mg/dL
BILIRUBIN (Direct)
< 0.2 mg/dL
Ca
8.6 – 10.6 mg/dL
P
2.5 – 4.6 mg/dL
Na
136 – 146 mEq/L
K
3.5 – 5.1 mEq/ L
UREA
7 – 18 mg/dL
CREATININE
M [0.9 – 1.3], F [0.7 – 1.1 mg/dL]
URATE
M [3.4 – 7], F [2.4 – 5.7 mg/dL]
TSH
0.3 – 4 µU/mL
f T₄
0.8 – 2 ng/dL
t T₃
64 – 175 ng/dL
GLUCOSE (F)
63 – 108 mg/dL
TRIGLYCERIDES (FASTING)
< 186 mg/dL
CHOLESTEROL (RECOMMENDED)
< 200 mg/dL
CHOLESTEROL (POPULATION RANGE)
135 – 259 mg/dL
HDL
M ( 30 – 70 mg/dL ), F ( 39 – 90 )
PSA
<1.4 µg/ L[< 40], <2 [40 – 49], <3 [50 – 59], <4 [60 -69], <4.4 [≥70]
Hb A1c
< 7 %
URINE
ALBUMIN
< 20 mg/24 h
PROTEIN (Total)
< 150 mg/24 h
CREATININE
1.01 – 2.04 g/24 h
HAEMATOLOGY
BT
2.5 – 9.5 min
PT, INR
1 – 1.3
APTT
23 – 31 s
Hb
M (13.5 – 17.5 g/dL), F (11.5 – 16.5)
RBC
M (4.5 – 6.5 × 10¹²), F (3.8 – 5.8 × 10¹² cells/ L)
WBC
4 – 11 × 10⁹ cells/ L
PLATELETS
150 – 400 × 10⁹ cells/ L
HCT
M (40 – 54 %), F (37 – 47 %)
MCV
80 – 96 fL
ESR
M ( 1 – 10 mm/h ), F (3 – 15 )
BASOPHILS
0 – 1 %
EOSINOPHILS
1 – 2%
MONOCYTES
2 – 10 %
LYMPHOCYTES
20 – 40 %
NEUTROPHILS
50 – 70 %

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