Critical Values for Chemistry unit
ANALYTE |
CRITICAL VALUES |
Bilirubin, newborn |
>15 mg/dL |
Blood Gases, Adult pH pCO2 pO2 |
<7.20 or >7.6 <20 or >70 mmHg <40 >90mmHg |
pO2(Now born) |
<35 or >90 mmHg |
Calcium, ionized |
<3.0 or>6.4mg/dL |
Calcium, total |
<6.0 or >13.0 mg/dL |
Chloride |
<80 or >120 mmol/L |
Glucose, adult |
<40 or >500 mg/dL |
Glucose, newborn |
<30 or >325 mg/dL |
Magnesium |
<1.0 or >4.7 mg/dL |
Osmolality |
<250 or >325 mOsm/Kg |
Phosphorus |
<1.0 >9 mg/dL |
Potassium |
<2.8 or>6.2mmol/L |
Sodium |
<120 or >160mmol/L |
Critical Values for Hematology unit
ANALYTE |
CRITICAL VALUES |
Absolute Neutrophil (non‐oncology) |
<0.5 x 10³/uL |
Hematocrit |
<20% > 65% |
Hemoglobin |
< 7.0 g/dL |
Partial thromboplastin time |
> 100 sec |
Prothrombin Time |
INR >5 |
Platelet count Infants(NICU only ) Non-oncology |
<60 x 103/uL <20 x 103/uL> 1000 x 10³ /uL |
Critical Values for Immunology Unit
ANALYTE |
CRITICAL VALUES |
Carbamazepine |
>14.0 ug/mL |
Cyclosporine by immunoassay |
>700 ng/mL |
Digoxin |
>3.0 ng/ml |
Phenytoin (Dilantin) |
>30.0 ug/mL |
Theophylline |
>25.0 ug/mL |
Valproic Acid (VPA) |
>150 ug/mL |
Critical Values for Hormone Unit
ANALYTE |
CRITICAL VALUES |
troponin I |
>3 ng/dL |
T4, adult |
>18.0 ug/dL |
T4, newborns |
<3.5 or >18.0 ug/dL |
Critical Values for Microbiology Unit
Positive blood culture.
Positive direct exam or culture on spinal fluid (CSF).
Positive Cryptococcal antigen (Serum or CSF).
Positive direct exam on any specimen from the Operating Room.
Positive AFB stain or culture from any specimen.
Positive Herpes simplex virus PCR on cerebral spinal fluid (CSF).