| Analyte | Age Range | Critical Value | Units |
| Anion Gap | Any age | >30 | mmol/L |
| Bicarbonate (Whole Blood) | Any age | <10, >40 | mEq/L |
| Calcium * | Any age | <6.5, >13 | mg/dL |
| Chloride | Any age | <80, >120 | mmol/L |
| CO2 | Any age | <10, >40 | mmol/L |
| CO Hemoglobin | Any age | <20, >40 | % |
| Free (ionized) Calcium | Any age | <20, >40 | % |
| Glucose | 0-2 days / >2 days <1 yr / >1 yr | >35 / >40 / >55 | mg/dL |
| Glucose | <30 days / >30 days–17 yrs / >17 yrs | >200 / >300 / >450 | mg/dL |
| Glucose (GDM Tests) | Any age | <50 / >300 | mg/dL |
| Glucose: PXP Glucose meter (POCT) | Any age | <40 / >300 | mg/dL |
| Iron, Serum | Any age | >350 | µg/dL |
| Magnesium | Any age | <1.0 / >3.5 | mg/dL |
| pCO2 | Any age | >65 | mmHg |
| pH | Any age | <7.20 / >7.60 | pH units |
| pH – Cord Blood | Any age | ≤7.00 | N/A |
| Base Excess – Cord Blood | Any age | ≤−10.0 / ≥10.0 | mmol/L |
| Phosphorus | <3 yrs / 3–12 yrs / >12 yrs | <2.5 / <2.0 / <1.5 | mg/dL |
| pO2 (arterial) | Any age | <50 / >300 | mg/dL |
| Potassium: iSTAT (POCT) | Any age | <3.0 / >6.0 | mmol/L |
| Sodium | Any age | <125 / >160 | mmol/L |
| TCO2 (Whole Blood) | Any age | <10 / >40 | mEq/L |
| Total Bilirubin | <1 day / >1d <2d / >2d <30d | >7 / >11 / >15 | mg/dL |
| Troponin I | Any age | ≥0.3 | ng/mL |
| Troponin I: iSTAT (POCT) | Any age | ≥0.1 | ng/mL |
| Analyte | Age Range | Critical Value | Units |
| Fibrinogen | Any age | <100 | mg/dL |
| Heparin, unfractionated | Any age | <0.1 >0.7 | IU/mL |
| PTT | Any age | ≥100 | sec |
| PT INR | Any age | >5.0 INR | N/A |
| PT INR: ISTAT (POCT) | Any age | >4.5 | N/A |
| Analyte | Age Range | Critical Value | Units |
| Absolute Neutrophil Count | Any age | ≤0.5 (Outpatient only) | K/μL |
| Cell Count, Any body fluid | Any age | Intracellular organisms. (Non CSF - Blasts and Tumor cells to be called as soon as provider is available) | N/A |
| Cell Count, CSF only | Any age | WBC Count >30 (excluding peripheral blood contamination) | /μL |
| Cell Count, CSF only | Any age | Blasts, Tumor Cells | N/A |
| Gram Stain | Any age | Positive | N/A |
| Hematocrit (PCV) | Any age | ≤21.0 ≥65.0 | % |
| Hemoglobin | Any age | ≤7.0 | g/dL |
| Malaria Screening | Any age | Positive | N/A |
| Platelet Count | Any age | ≤10,000 ≤50,000 (OB clinics only) ≤100,000 with 2+ microangiopathic changes | /μL |
| Slide Review/Diff | Any age | Presence of intracellular organisms. Blasts on peripheral smear (1st time or relapse only). | % |
| Stool | Male/Female <18 Years | Sperm | N/A |
| Urinalysis | Female<18 Years Male<18 Years | Sperm or Trichomonas | N/A |
| WBC | Any age | ≤0.5 (Outpatient only) ≥50 | K/μL |
| Analyte | Age Range | Critical Value | Units |
| Any assay: Potential Bioterrorism Agent | Any age |
Presence of potential B. anthracis or any BT agent. Bacillus anthracis (Category A), Francisella tularensis (Category A), Yersinia pestis (Category A), Brucella species (Category B) | N/A |
| Blood Culture | Any age | Any clinically important positive results per protocol | N/A |
| Mycobacterium Tuberculosis PCR Test | Any age | Positive on Tissue or Culture | N/A |
| Stool culture | <18 years | Positive Shiga toxin producing E. Coli | N/A |
| Analyte | Age Range | Critical Value | Units |
| Antigen test, culture, serology, or molecular test | Any age |
Positive or suspicious for any Pandemic (Influenza or SARS) or Bioterrorism Agents (Smallpox, Viral hemorrhagic fever agents) | N/A |
| Any CSF Assay | Any age | Positive (including virus growth or molecular test) | N/A |
