CLINICAL LABORATORY REFERENCE RANGES

Question 1

Which units are predominately given in laboratory test results?

Answer 1

SI units are the predominant nomenclature for laboratory test results.

Question 2

List the Cerebrospinal fluid parameters.

Answer 2

1. Cerebrospinal fluid total protein (lumbar): 0.2-0.5 g/L
2. Cerebrospinal fluid glucose: 60-70 % of actual blood glucose level
3. Cerebrospinal fluid cell count: 0-5 cells/µL

Question 3

List the Blood gases parameters.

Answer 3

1. Blood pH: 7.35-7.45 (arterial blood)
2. pCO2: 35-45 mmHg (arterial blood)
3. Actual bicarbonate: 22-26 mmol/L (arterial blood)
4. Base excess (BE): 0 ± 3 mmol/L
5. Oxygen, partial pressure (pO2): 75-100 mmHg (arterial blood)
6. Oxygen saturation (O2SAT): 95-98 % (arterial blood)

Question 4

List the Clinical Chemisty parameters.

Answer 4

1. Serum osmolality: 275-300 mOsmol/kgH2O
2. Serum sodium: 135-145 mmol/L
3. Serum potassium: 3.5-5.0 mmol/L
4. Serum total calcium: 2.2-2.6 mmol/L
5. Serum total protein: 60-80 g/L
6. Serum albumin: 35-50 g/L
7. Serum creatinine: female 50-100 µmol/l, male 60-110 µmol/L
8. Serum urea: 3-8 mmol/L
9. Serum total bilirubin: <17 µmol/L
10. Serum direct (conjugated) bilirubin: <5 µmol/L
11. Serum cholesterol: 2.8-5.2 mmol/L
12. Serum triglycerides: 0.5-2.0 mmol/L
13. Serum glucose (fasting): 3.6-6.0 mmol/L
14. C-reactive protein: <5 mg/L
15. Creatinine clearance: 100-120 mL/min

Question 5

List the Hematologic parameters.

Answer 5

1. Hemoglobin: female 120-150 g/L, male 130-170 g/L
2. Hematocrit: female 0.36-0.45 L/L, male 0.40-0.50 L/L
3. Red blood cell count: female 4.1-5.1 T/L, male 4.5-5.9 T/L
4. Mean corpuscular volume (MCV): 80-96 fL
5. White blood cell count: 5-10 G/L
6. Platelet count: 150-400 G/L
7. Reticulocyte count: 0.5-2 % of RBCs
8. Erythrocyte sedimentation rate: female <15 mm/hour, male <10 mm/hour
9. Bleeding time: 3-9 min
10. Prothrombin time (PT): 0.9-1.1 INR
11. Partial thromboplastin time (PTT): 25-40 sec
12. Fibrinogen concentration: 1.5-4 g/L

Question 6

List the Urinary parameters.

Answer 6

1. Urine density (specific gravity): 1015-1025 kg/m3 or 1.015-1.025 g/cm3
2. Urine pH (in addition to the normal diet): 5-6
3. Urinary protein, glucose, ketones, bilirubin, UBG, nitrite, WBC, RBC are negative or normal with reagent strip (dipstick).
4. Urinary sediment: WBC and/or RBC 0-3/high-power field (400x)