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You are here: Home/ Clinical Testing Zone/ Normal Laboratory Values

Normal Laboratory Values - Patient Test Charts

Normal Laboratory Values (Haematology Reference Values)

In the following tables, normal haematology reference values for commonly requested laboratory tests are listed in traditional units and in SI units. The tables are a guideline only. Values are method dependent and normal lab values may vary between laboratories.


Determination Normal Reference Value
  Conventional units SI units
Blood, Plasma or Serum
Ammonia (NH3) - diffusion 20-120 mcg/dl 12-70 mcmol/L
Ammonia Nitrogen 15-45 µg/dl 11-32 µmol/L
Amylase 35-118 IU/L 0.58-1.97 mckat/L
Anion gap (Na+-[Cl - + HCO3- ]) (P) 7-16 mEq/L 7-16 mmol/L
Antithrombin III (AT III) 80–120 U/dl 800–1200 U/L
Bicarbonate
Arterial 21–28 mEq/L 21–28 mmol/L
Venous 22–29 mEq/L 22–29 mmol/L
Bilirubin
Conjugated (direct) Total £ 0.2 mg/dl
&
0.1–1 mg/dl
£ 4 mcmol/L
&
2–18 mcmol/L
Calcitonin < 100 pg/ml < 100 ng/L
Calcium
Total 8.6–10.3 mg/dl 2.2–2.74 mmol/L
Ionized 4.4–5.1 mg/dl 1–1.3 mmol/L
 
Carbon dioxide content (plasma) 21–32 mmol/L 21–32 mmol/L
Carcinoembryonic antigen < 3 ng/ml < 3 mcg/L
Chloride 95–110 mEq/L 95–110 mmol/L
Coagulation screen
Bleeding time 3–9.5 min 180–570 sec
Prothrombin time 10–13 sec 10–13 sec
Partial thromboplastin time (activated) 22–37 sec 22–37 sec
Protein C 0.7–1.4 µ/ml 700–1400 U/ml
Protein S 0.7–1.4 µ/ml 700–1400 U/ml
Copper, total 70–160 mcg/dl 11–25 mcmol/L
Corticotropin (ACTH adrenocorticotropic hormone) - 0800 hr < 60 pg/ml < 13.2 pmol/L
Cortisol
0800 hr 5–30 mcg/dl 138–810 nmol/L
1800 hr 2–15 mcg/dl 50–410 nmol/L
2000 hr £ 50% of 0800 hr £ 50% of 0800 hr
Creatine kinase
Female 20–170 IU/L 0.33–2.83 mckat/L
Male 30–220 IU/L 0.5–3.67 mckat/L
Creatinine kinase isoenzymes, MB fraction 0–12 IU/L 0–0.2 mckat/L
Creatinine 0.5–1.7 mg/dl 44–150 mcmol/L
Fibrinogen (coagulation factor I) 150–360 mg/dl 1.5–3.6 g/L
Follicle-stimulating hormone (FSH)
Female 2–13 mlU/ml 2–13 IU/L
Midcycle 5–22 mlU/ml 5–22 IU/L
Male 1–8 mlU/ml 1–8 IU/L
 
Glucose, fasting 65–115 mg/dl 3.6–6.3 mmol/L
Glucose Tolerance Test (Oral)
  (mg/dl) (mmol/L)
  Normal Diabetic Normal Diabetic
Fasting 70–105 > 140 3.9–5.8 > 7.8
60 min 120–170 ³ 200 6.7–9.4 ³ 11.1
90 min 100–140 ³ 200 5.6–7.8 ³ 11.1
120 min 70–120 ³ 140 3.9–6.7 ³ 7.8
(g) - Glutamyltransferase (GGT)
Male 9–50 units/L 9–50 units/L
Female 8–40 units/L 8–40 units/L
 
Haptoglobin 44–303 mg/dl 0.44–3.03 g/L
Hematologic Tests
Fibrinogen 200–400 mg/dl 2–4 g/L
Hematocrit (Hct)
female 36%-44.6% 0.36–0.446 fraction of 1
male 40.7%-50.3% 0.4–0.503 fraction of 1
Hemoglobin A 1C 5.3%-7.5% of total Hgb 0.053–0.075
Hemoglobin (Hb)
female 12.1–15.3 g/dl 121–153 g/L
male 13.8–17.5 g/dl 138–175 g/L
Leukocyte count (WBC) 3800–9800/mcl 3.8–9.8 x 109/L
Erythrocyte count (RBC)
female 3.5–5 x 106/mcl 3.5–5 x 1012/L
male 4.3–5.9 x 106/mcl 4.3–5.9 x 1012/L
 
Mean corpuscular volume (MCV) 80–97.6 mcm3 80–97.6 fl
Mean corpuscular hemoglobin (MCH) 27–33 pg/cell 1.66–2.09 fmol/cell
Mean corpuscular hemoglobin concentrate (MCHC) 33–36 g/dl 20.3–22 mmol/L
Erythrocyte sedimentation rate (sedrate, ESR) £30 mm/hr £30 mm/hr
Erythrocyte enzymes
Glucose-6 - Pphosphate dehydrognase (G-6-PD) 250–5000 units/106 cells 250–5000 mcunits/cell
Determination Reference Value
  (Conventional units) (SI units)
Blood, Plasma or Serum:

Ammonia (NH3) - diffusion



20–120 mcg/dl



12–70 mcmol/L
Ammonia Nitrogen 15–45 µg/dl 11–32 µmol/L
Amylase 35–118 IU/L 0.58–1.97 mckat/L
Anion gap (Na+-[Cl - + HCO3-]) (P) 7–16 mEq/L 7–16 mmol/L
Antithrombin III (AT III) 80–120 U/dl 800–1200 U/L
Bicarbonate: Arterial
Venous
21–28 mEq/L
22–29 mEq/L
21–28 mmol/L
22–29 mmol/L
Bilirubin: Conjugated (direct) Total £ 0.2 mg/dl
(0.1–1 mg/dl)
£ 4 mcmol/L
(2–18 mcmol/L)
Calcitonin < 100 pg/ml < 100 ng/L
Calcium: Total
  Ionized
8.6–10.3 mg/dl
4.4–5.1 mg/dl
2.2–2.74 mmol/L
1–1.3 mmol/L
Carbon dioxide content (plasma) 21–32 mmol/L 21–32 mmol/L
Carcinoembryonic antigen < 3 ng/ml < 3 mcg/L
Chloride 95–110 mEq/L 95–110 mmol/L
Coagulation screen:
Bleeding time
Prothrombin time
Partial thromboplastin time (activated)
Protein C
Protein S


3–9.5 min
10–13 sec

22–37 sec


0.7–1.4 µ/ml
0.7–1.4 µ/ml


180–570 sec
10–13 sec

22–37 sec


700–1400 U/ml
700–1400 U/ml
Copper, total 70–160 mcg/dl 11–25 mcmol/L
Corticotropin
(ACTH adrenocorticotropic hormone) - 0800 hr
< 60 pg/ml < 13.2 pmol/L
Cortisol: 0800 hr
  1800 hr
  2000 hr
5–30 mcg/dl
2–15 mcg/dl
£ 50% of 0800 hr
138–810 nmol/L
50–410 nmol/L
£ 50% of 0800 hr
Creatine kinase: Female
  Male
20–170 IU/L
30–220 IU/L
0.33–2.83 mckat/L
0.5–3.67 mckat/L
Creatinine kinase isoenzymes, MB fraction 0–12 IU/L 0–0.2 mckat/L
Creatinine 0.5–1.7 mg/dl 44–150 mcmol/L
Fibrinogen (coagulation factor I) 150–360 mg/dl 1.5–3.6 g/L
Follicle-stimulating hormone (FSH):
Female
Midcycle
Male


2–13 mlU/ml
5–22 mlU/ml
1–8 mlU/ml


2–13 IU/L
5–22 IU/L
1–8 IU/L
Glucose, fasting 65–115 mg/dl 3.6–6.3 mmol/L
Glucose Tolerance Test (Oral)



Fasting
60 min
90 min
120 min
(mg/dl)
Normal Diabetic
70–105 > 140
120–170 ³ 200
100–140 ³ 200
70–120 ³ 140
(mmol/L)
Normal Diabetic
3.9–5.8 > 7.8
6.7–9.4 ³ 11.1
5.6–7.8 ³ 11.1
3.9–6.7 ³ 7.8
(g) -Glutamyltransferase (GGT):
Male
Female



9–50 units/L
8–40 units/L



9–50 units/L
8–40 units/L
Haptoglobin 44–303 mg/dl 0.44–3.03 g/L
 
Determination Reference Value
Conventional units SI units
Hematologic tests:
Fibrinogen


Hematocrit (Hct),
female
male
Hemoglobin A 1C

Hemoglobin (Hb),
female
male

Leukocyte count (WBC)


Erythrocyte count (RBC):
female
male

Mean corpuscular volume (MCV)
Mean corpuscular hemoglobin (MCH)



Mean corpuscular hemoglobin
concentrate (MCHC)



Erythrocyte sedimentation rate
(sedrate, ESR)



200–400 mg/dl




36%-44.6%
40.7%-50.3%
5.3%-7.5% of total Hgb




12.1–15.3 g/dl
13.8–17.5 g/dl

3800–9800/mcl




3.5–5 x 106/mcl
4.3–5.9 x 106/mcl

80–97.6 mcm3

27–33 pg/cell




33–36 g/dl




£30 mm/hr



2–4 g/L




0.36–0.446 fraction of 1
0.4–0.503 fraction of 1
0.053–0.075




121–153 g/L
138–175 g/L

3.8–9.8 x 109/L




3.5–5 x 1012/L
4.3–5.9 x 1012/L

80–97.6 fl

1.66–2.09 fmol/cell




20.3–22 mmol/L




£ 30 mm/hr
Erythrocyte enzymes:

Glucose-6 -
Pphosphate dehydrognase
(G-6-PD)


Ferritin
Folic acid: normal
Platelet count



Reticulocytes






Vitamin B12



250–5000 units/106 cells








10–383 ng/ml
>3.1–12.4 ng/ml
150–450 x 103/mcl



0.5%-1.5% of erythrocytes



223–1132 pg/ml



250–5000 mcunits/cell








23–862 pmol/L
7–28.1 nmol/L
150–450 x 109/L



0.005–0.015





165–835 pmol/L
Iron: Female
  Male
30–160 mcg/dl
45–160 mcg/dl
5.4–31.3 mcmol/L
8.1–31.3 mcmol/L
Iron binding capacity 220–420 mcg/dl 39.4–75.2 mcmol/L
Isocitrate dehydrogenase 1.2–7 units/L 1.2–7 units/L
Isoenzymes


Fraction 1


Fraction 2


Fraction 3


Fraction 4


Fraction 5
14%-26% of total


29%-39% of total


20%-26% of total


8%-16% of total


6%-16% of total
0.14–0.26 fraction of total
0.29–0.39 fraction of total
0.20–0.26 fraction of total
0.08–0.16 fraction of total
0.06–0.16 fraction of total
Lactate dehydrogenase 100–250 IU/L 1.67–4.17 mckat/L
Lactic acid (lactate) 6–19 mg/dl 0.7–2.1 mmol/L
Lead £ 50 mcg/dl £ 2.41 mcmol/L
Lipase 10–150 units/L 10–150 units/L
Lipids:
Total Cholesterol
Desirable


Borderline-high
High
LDL
Desirable


Borderline-high
High
HDL (low)
Triglycerides
Desirable


Borderline-high
High
Very high


< 200 mg/dl
200–239 mg/dl




> 239 mg/dl
< 130 mg/dl
130–159 mg/dl





> 159 mg/dl
< 35 mg/dl

< 200 mg/dl
200–400 mg/dl



400–1000 mg/dl
> 1000 mg/dl


< 5.2 mmol/L
< 5.2–6.2 mmol/L




> 6.2 mmol/L

< 3.36 mmol/L
3.36–4.11 mmol/L




> 4.11 mmol/L
< 0.91 mmol/L

< 2.26 mmol/L
2.26–4.52 mmol/L



4.52–11.3 mmol/L
> 11.3 mmol/L
Magnesium 1.3–2.2 mEq/L 0.65–1.1 mmol/L
Osmolality 280–300 mOsm/kg 280–300 mmol/kg
Oxygen saturation (arterial) 94%-100% 0.94 - fraction of 1
PCO2, arterial 35–45 mm Hg 4.7–6 kPa
pH, arterial 7.35–7.45 7.35–7.45
 
Determination Reference Value
Conventional units SI units
PO, arterial: Breathing room air
On 100% O
80–105 mm Hg
> 500 mm Hg
10.6–14 kPa
Phosphatase (acid), total at 37°C 0.13–0.63 IU/L 2.2–10.5 IU/L or
2.2–10.5 mckat/L
Phosphatase alkaline 20–130 IU/L 20–130 IU/L or
0.33–2.17 mckat/L
Phosphorus, inorganic, (phosphate) 2.5–5 mg/dl 0.8–1.6 mmol/L
Potassium 3.5–5 mEq/L 3.5–5 mmol/L
Progesterone
Female
Follicular phase
Luteal phase
Male


0.1–1.5 ng/ml
0.1–1.5 ng/ml
2.5–28 ng/ml
< 0.5 ng/ml


0.32–4.8 nmol/L
0.32–4.8 nmol/L
8–89 nmol/L
< 1.6 nmol/L
Prolactin 1.4–24.2 ng/ml 1.4–24.2 mcg/L
Prostate specific antigen
Protein: Total
Albumin
Globulin
0–4 ng/ml
6–8 g/dl
3.6–5 g/dl
2.3–3.5 g/dl
0–4 ng/ml
60–80 g/L
36–50 g/L
23–35 g/L
Rheumatoid factor < 60 IU/ml < 60 kIU/L
Sodium 135–147 mEq/L 135–147 mmol/L
Testosterone:
Female
Male


6–86 ng/dl
270–1070 ng/dl


0.21–3 nmol/L
9.3–37 nmol/L
Thyroid Hormone Function Tests:

Thyroid-stimulating hormone (TSH)
Thyroxine-binding globulin capacity
Total triiodothyronine (T3)
Total thyroxine by RIA (T4)
T3 resin uptake



0.35–6.2 mcU/ml
10–26 mcg/dl
75–220 ng/dl
4–11 mcg/dl
25%-38%



0.35–6.2 mU/L
100–260 mcg/L
1.2–3.4 nmol/L
51–142 nmol/L
0.25–0.38 fraction of 1
Transaminase, AST (aspartate aminotransferase, SGOT) 11–47 IU/L 0.18–0.78 mckat/L
Transaminase, ALT (alanine aminotransferase, SGPT) 7–53 IU/L 0.12–0.88 mckat/L
Transferrin 220–400 mg/dL 2.20–4.00 g/L
Urea nitrogen (BUN) 8–25 mg/dl 2.9–8.9 mmol/L
Uric acid 3–8 mg/dl 179–476 mcmol/L
Vitamin A (retinol) 15–60 mcg/dl 0.52–2.09 mcmol/L
Zinc 50–150 mcg/dl 7.7–23 mcmol/L
1 Age dependent
2 Infants and adolescents up to 104 U/L
3 Infants in the first year up to 6 mg/dl


Urine
Determination Reference Value
Conventional units SI units
Calcium 50–250 mcg/day 1.25–6.25 mmol/day
Catecholamines:

Epinephrine
Norepinephrine



< 20 mcg/day
< 100 mcg/day



< 109 nmol/day
< 590 nmol/day
Catecholamines, 24-hr < 110 µg < 650 nmol
Copper 15–60 mcg/day 0.24–0.95 mcmol/day
Creatinine:

Child
Adolescent
Female
Male



8–22 mg/kg
8–30 mg/kg
0.6–1.5 g/day
0.8–1.8 g/day



71–195 µmol/kg
71–265 µmol/kg
5.3–13.3 mmol/day
7.1–15.9 mmol/day
pH 4.5–8 4.5–8
Phosphate 0.9–1.3 g/day 29–42 mmol/day
Potassium 25–100 mEq/day 25–100 mmol/day
Protein

Total
At rest




1–14 mg/dL
50–80 mg/day




10–140 mg/L
50–80 mg/day
Protein, quantitative < 150 mg/day < 0.15 g/day
Sodium 100–250 mEq/day 100–250 mmol/day
Specific gravity, random 1.002–1.030 1.002–1.030
Uric acid, 24-hr 250–750 mg 1.48–4.43 mmol
1 Diet dependent.

Drug Levels*
Drug Determination Reference Value
Conventional units SI units
Aminoglycosides Amikacin
(trough)
(peak)
1–8 mcg/ml
1.7–13.7 mcmol/L
20–30 mcg/ml
34–51 mcmol/L
Gentamicin
(trough)
(peak)
0.5–2 mcg/ml
6–10 mcg/ml
1–4.2 mcmol/L
12.5–20.9 mcmol/L
Kanamycin
(trough)
(peak)
5–10 mcg/ml
20–25 mcg/ml
nd
nd
Netilimicin
(trough)
(peak)
0.5–2 mcg/ml
6–10 mcg/ml
nd
nd
Streptomycin
(trough)
(peak)
< 5 mcg/ml
5–20 mcg/ml
nd
nd
Tobramycin
(trough)
(peak)
0.5–2 mcg/ml
5–20 mcg/ml
1.1–4.3 mcmol/L
12.8–21.8 mcmol/L
 
Drug Determination Reference Value
Conventional units SI units
Antiarrhythmics Amiodarone 0.5–2.5 mcg/ml 1.5–4 mcmol/L
Bretylium 0.5–1.5 mcg/ml nd
Digitoxin 9–25 mcg/L 11.8–32.8 nmol/L
Digoxin 0.8–2 ng/ml 0.9–2.5 nmol/L
Disopyramide 2–8 mcg/ml 6–18 mcmol/L
Flecainide 0.2–1 mcg/ml nd
Lidocaine 1.5–6 mcg/ml 4.5–21.5 mcmol/L
Mexiletine 0.5–2 mcg/ml nd
Procainamide 4–8 mcg/ml 17–34 mcmol/ml
Propranolol 50–200 ng/ml 190–770 nmol/L
Quinidine 2–6 mcg/ml 4.6–9.2 mcmol/L
Tocainide 4–10 mcg/ml nd
Verapamil 0.08–0.3 mcg/ml nd
Anticonvulsants Carbamazepine 4–12 mcg/ml 17–51 mcmol/L
Phenobarbital 10–40 mcg/ml 43–172 mcmol/L
Phenytoin 10–20 mcg/ml 40–80 mcmol/L
Primidone 4–12 mcg/ml 18–55 mcmol/L
Valproic Acid 40–100 mcg/ml 280–700 mcmol/L
Antidepressants Amitriptyline 110–250 ng/ml 500–900 nmol/L
Amoxapine 200–500 ng/ml nd
Bupropion 25–100 ng/ml nd
Clomipramine 80–100 ng/ml nd
Desipramine 115–300 ng/ml nd
Doxepin 110–250 ng/ml nd
Imipramine 225–350 ng/ml nd
Maprotiline 200–300 ng/ml nd
Nortriptyline 50–150 ng/ml nd
Protriptyline 70–250 ng/ml nd
Trazodone 800–1600 ng/ml nd
Antipsychotics Chlorpromazine 50–300 ng/ml 150–950 nmol/L
Fluphenazine 0.13–2.8 ng/ml nd
Haloperidol 5–20 ng/ml nd
Perphenazine 0.8–1.2 ng/ml nd
Thiothixene 2–57 ng/ml nd
 
Drug Determination Reference Value
Conventional units SI units
Miscellaneous Amantadine
Amrinone
300 ng/ml
3.7 mcg/ml
nd
nd
Chloramphenicol 10–20 mcg/ml 31–62 mcmol/L
Cyclosporine 250–800 ng/ml
(whole blood, RIA)
50–300 ng/ml (plasma, RIA)
nd
nd
Ethanol 0 mg/dl 0 mmol/L
Hydralazine 100 ng/ml nd
Lithium 0.6–1.2 mEq/L 0.6–1.2 mmol/L
Salicylate 100–300 mg/L 724–2172 mcmol/L
Sulfonamide 5–15 mg/dl nd
Terbutaline 0.5–4.1 ng/ml nd
Theophylline 10–20 mcg/ml 55–110 mcmol/L
Vancomycin
   (trough)
   (peak)
5–15 ng/ml
20–40 mcg/ml
nd
nd
* The values given are generally accepted as desirable for treatment without toxicity for most patients. However, exceptions are not uncommon.
1 nd = No data available.
2 Parent drug plus N-desmethyl metabolite.
3 24–hour trough values.
4 Toxic: 50–100 mg/dl (10.9–21.7 mmol/L).

The following table is adopted from the Sixth Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure, National Institutes of Health.

Classification of Blood Pressure *
Category Reference value
Systolic (mm Hg) Diastolic (mm Hg)
Optimal < 120 and < 80
Normal < 130 and < 85
High-normal 130–139 or 85–89
Hypertension
Stage 1
Stage 2
Stage 3


140–159
160–179
³ 180


or
or
or


90–99
100–109
³ 110


* For adults age 18 and older who are not taking antihypertensive drugs and not acutely ill. When systolic and diastolic blood pressures fall into different categories, the higher category should be selected to classify the individual's blood pressure status. In addition to classifying stages of hypertension on the basis of average blood pressure levels, clinicians should specify presence or absence of target organ disease and additional risk factors.
1 Optimal blood pressure with respect to cardiovascular risk is below 120/88 m Hg. However, unusually low readings should be evaluated for clinical significance.
2 Based on the average of two or more readings taken at each of two or more visits after an initial screening.

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