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Critical Value Chart*
| Test |
Critical Value |
| Acetaminophen |
> 30 mcg/mL |
| Alcohol |
> 300 mg/dL |
| Amikacin, Peak |
> 35 mcg/mL |
| Ammonia |
> 100 mcmol/L |
| Arterial pH |
< 20 and > 70 mm/Hg |
| Arterial pO2 |
< 7.20 and > 7.60 |
| BUN |
> 75 mg/dL (if not consistent with patient history) |
| Calcium |
< 6.0 and > 13.0 mg/dL |
| Capillary pO2 |
< 35 mm/Hg |
| Carbamazepine |
> 12 mcg/mL |
| CK |
> 1000 U/L |
| CO2 |
< 10 and > 40 mmol/L |
| Cord Blood pH |
< 7.00 |
| Creatinine |
> 5.0 mg/dL (if not consistent with patient history) |
| Digoxin |
> 2.0 ng/mL |
| Gentamicin, Peak |
> 10.0 mcg/mL |
| Gentamicin, Trough |
> 2.0 mcg/mL |
| Glucose, Serum |
< 50 and > 400 mg/dL |
| Hepatitis A Antibody (IgM) |
Positive |
| Hepatitis B Core Antibody (IgM) |
Positive |
| Hepatitis B Surface Antigen |
Positive |
| Hepatitis C Antibody |
Positive |
| Ionized Calcium |
< 3.5 and > 6.0 mg/dL |
| Lactic Acid |
> 5.0 mmol/L |
| Lidocaine |
> 5.0 mcg/mL |
| Lithium |
> 1.5 mmol/L |
| Magnesium |
< 1.0 and > 4.0 mg/dL |
| Mass CKMB |
> 10.0 ng/mL |
| Osmolality, Serum |
< 265 and > 320 mOsm/Kg |
| Phenobarbital |
> 40.0 mcg/mL |
| Phenytoin |
>20.0 mcg/mL |
| Phosphorus |
< 1.0 mg/dL |
| Potassium |
< 3.0 and > 6.0 mmol/L |
| Salicylate |
> 30.0 mg/dL |
| Sirolimus |
> 12.0 ng/mL |
| Sodium |
< 120 and > 160 mmol/L |
| Tacrolimus |
>20.0 ng/mL |
| Theophylline |
> 20.0 mcg/mL |
| Tobramycin, Peak |
> 10.0 mcg/mL |
| Tobramycin, Trough |
> 2.0 mcg/mL |
| Topiramate |
> 25.0 mcg/mL |
| Tricyclic Screen |
> 500 ng/mL |
| Troponin-I |
> 1.0 ng/mL |
| Urine Protein (Ob/Gyn) |
>500 mg/24hr |
| Valproic Acid |
> 119 mcg/mL |
| Vancomycin, Peak |
> 60.0 mcg/mL |
| Vancomycin, Trough |
> 23.0 mcg/mL |
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