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