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Medical Decision Levels

These tables of medical decision levels provide possible critical decision levels - where you can assess performance (CV, bias) and determine the Sigma-metrics and appropriate QC procedures.

These figures are quoted from Statland BE. Clinical Decision Levels for Laboratory Tests, Second Edition [Oradell NJ;Medical Economics Books, 1987.] with permission.

MEDICAL DECISION LEVELS

These figures are quoted from Statland BE. Clinical Decision Levels for Laboratory Tests, Second Edition [Oradell NJ;Medical Economics Books, 1987.] with permission.

Test Units Reference
Interval
Decision Levels
ELECTROLYTES 1 2 3 4 5
Calcium mg/dL 9.0-10.6 7.0 11.0 13.5
Chloride mmol/L 98-109 90 112
CO2 Content mmol/L 23-30 6.0 20 33
Magnesium mEq/L 1.2-2.4 1.2 2.0 5.0
mmol/L 0.6-1.2 0.6 1.0 2.5
Phosphorus mg/dL 2.5-5.0 1.5 2.5 5.0
Potassium mmol/L 3.7-5.1 3.0 5.8 7.5
Sodium mmol/L 138-146 115 135 150

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Test Units Reference
Interval
Decision Levels
METABOLITES 1 2 3 4 5
Bilirubin mg/dL 0.1-1.2 1.4 2.5 20
Cholesterol mg/dL 150-275 90 240 260 350
Creatinine mg/dL 0.7-1.5 0.6 1.6 6.0
Glucose mg/dL 60-95 45 120 180
Iron ug/dL 50-165 50 220 400
Triglycerides mg/dL 20-180 40 150 400
Urea Nitrogen (BUN) mg/dL 8-26 6 26 50
Uric acid mg/dL 2.5-7.0 2.0 8.0 10.7

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Test Units Reference
Interval
Decision Levels
PROTEINS and ENZYMES 1 2 3 4 5
Alanine aminotransferase U/L 5-40 20 60 300
Albumin g/dL 3.5-5.0 2.0 3.5 5.2
Alkaline phosphatase U/L 35-120 50 150 400
Amylase Somogyi U 60-180 50 120 200
Aspartate aminotransferase U/L 8-40 20 60 300
Carcinoembryonic antigen ng/mL <2.5 2.5 10 20
Creatine kinase U/L 10-180 100 240 1800
Glutamyl transferase U/L 5-40 20 50 150
Lactate dehydrogenase U/L 60-220 150 300 500
Total protein g/dL 6.0-8.0 4.5 6.0 8.0

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Test Units Reference
Interval
Decision Levels
HORMONES 1 2 3 4 5
Cortisol in plasma ug/dL 7-20 @8am 5 10 18 25
Cortisol (Free) in urine ug/24 hrs 20-90 50 100
Follicle-stimulating hormone mIU/mL 2-15 Adult M 1 35 60
Follicular phase, Luteal phase 3-15 Adult F
17-Hydroxycorticosteroids mg/24 hrs 3-10 3 15 20
17-Ketosteroids in urine mg/24 hrs 8-20 Adult M 20 25 40
5-15 Adult F
Luteinizing hormone mIUL/mL 5-25 Adult M 1 50 100
Follicular phase 5-30 Adult F
Metanephrine in urine mg/24 hrs <1.3 1.3 2.5
Prolactin ng/mL 1-20 M 30 100 300
1-25 F
Thyroxine ug/dL 5.5-12.5 5 7 10 14
Vanillymandelic acid in urine mg/24 hrs <6.8 6.8 13

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Test Units Reference
Interval
Decision Levels
HEMATOLOGY RELATED TESTS 1 2 3 4 5
Antithrombin-III % of normal 80-120 50 75
Bleeding Time min 2.3-9.2 10 15
Fibrinogen in plasma mg/dL 200-400 30 100 500
Folate in serum ng/mL 2-15 1.5 4.0
Hematocrit L/L 0.43-0.51 M 0.14 0.33 0.56 0.70
0.38-0.46 F
Hemoglobin g/dL 14-17.8 M 4.5 10.5 17 23
12-15.6 F
Mean corpuscular volume fL (cu u) 84-96 80 100
Partial thromboplastin time sec 30 35 45 90
Plasminogen % 80-120 50 75 135
Platelet count K/uL 150-400 10 50 100 600 1000
Prothrombin time sec 11.5 14 16 30
Vitamin B12 pg/mL 200-900 170 250 1200
White blood cell count K/uL 4-11 0.5 3 12 30

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Test Units Theraputic
Range
Decision Levels
DRUGS 1 2 3 4 5
Amikacin ug/mL 20-30 (peak) 10 20 32
1-8 (trough)
Carbamazepine ug/mL 4-12 4 9 14
Digoxin ug/mL 0.9-2.0 1.0 1.6 2.5
Disopyramide ug/mL 2.5-5.0 2.5 4.5 7.0
Ethosuximide ug/mL 50-100 50 120
Gentamicin ug/mL 6-10 (peak) 0.5 2 6 12
0.5-1.5 (trough)
Kanamycin ug/mL 20-30 (peak) 10 20 32
1-8 (trough)
Lidocaine ug/mL 1.5-5.0 1.5 5.0 7.0
Lithium mmol/L 0.5-1.2 0.4 0.8 1.5
Phenobarbital ug/mL 15-40 15 30 60 120
Phenytoin ug/mL 10-20 10 20 50
Primidone ug/mL 5-12 5 9 12
Procainamide ug/mL 4-10 4 12 16
Quinidine ug/mL 2-5 2 5 7
Salicylates ug/mL 150-300 150 300 500
Theophylline ug/mL 10-20 asthma 10 20 35 60
5-10 neonatal apnea
Tobramycin ug/mL 6-10 (peak) 0.5 2 6 12
0.5-1.5 (trough)
Valproic acid ug/mL 50-100 50 90 120

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