Call Back Critical Value Levels


Absolute Neutrophil Count      <0.5 K/ul


  >200 µg/dL
Bilirubin, Total, Serum   >10.0 mg/dL
Bilirubin, Total, Serum      ≥ 5.0 mg/dl
BUN   >100 mg/dL
Calcium, Ionized Low <3.2 mg/dL
                                            High >6.5 mg/dL
Calcium, Total, Serum Low <6.5 mg/dL
                                            High >12.9 mg/dL
CK-MB Isoenzyme Serum    
             Relative Index   >6.0
CO2      ≥40 mEQ/L
Creatine Kinase   >6000 U/L
Creatinine, Serum   >8.0 mg/dL
D-Dimer   >0.55 µg/ml
Digoxin                               Low <0.30 ng/mL
                                           High >2.0 ng/mL
Fibrinogen   <60 mg/dL
Glucose                              Low <50 mg/dL
                                            High >400 mg/dL
Hemoglobin, Blood             Low <7.0 g/dL
                              Male      High >20.0 g/dL
                              Female  High >18.0 g/dL
Iron  <12 years of age   >500 µg/dL
Lead, Blood           0-15 years   >20 µg/dL
>16 years   >45 µg/dL
Lithium, Serum Low <0.2 mM/L
  High >1.5 mM/L
PTT, Plasma   >75 seconds
Phenytoin, Total, Serum   >30.0 µg/mL
Phosphorus Low <1.0 mg/dL
Platelet Count, Blood Low <50 thousand/cmm
  High >800 thousand/cmm
Potassium, Serum Low <2.9 mEq/L
  High >6.0 mEq/L
PT, Plasma INR >5.0
Sodium, Serum Low <120 mEq/L
  High >160 mEq/L
T4, Free, Serum Low <0.2 µg/mL
  High >5.0 µg/mL
Troponin I   >0.040 ng/mL
Valproic Acid, Serum   >150 µg/mL
White Blood Cell Count Low <2.0 thousand/cmm
  High >50.0 thousand/cmm



Beta-Strep Group A All Positives
Chlamydia Trachomatis- Any Methodology Positive for Chlamydia Trachomatis
Clostridium Difficile, Toxin A, Feces Positive for Clostridium Difficile Toxin
Clostridium Difficile, Toxin B, Feces Positive for Clostridium Difficile Toxin
Cryptosporidium Antigen, Feces Positive for Cryptosporidium
Culture and Antibiotic Sensitivity

Beta-Strep Group A from respiratory wound; positive agents   of bioterrorism; Bacillus anthracis, Yersinia pestis; Francisella tularensis, or Brucella species; and positive for Streptococcus  pneumonia

Culture, Blood All positives
Culture, Eye Positive Pseudomonas, Haemophilus
Culture, Staph. aureus, Multi-resistant Positive for Methicillin-Resistant Staphylococcus aureus
                                   Strains (MRSA)
Culture, Staph. aureus, Vancomycin-Resistant Positive for Vancomycin-Resistant Staphylococcus aureus
Culture, Stool Positive for Salmonella, Shigella, Campylobacter, Yersinia,   Aeromonas and Plesiomonas,Vibrio, E.Coli 0157H7
Helicobacter pylori Antigen, Feces  Positive
Giardia, Feces Positive for Giardia
Influenza Positive for Influenza A/B
Malaria Smear Positive for Malaria/Babesia and other blood parasites
Neisseria gonorrhoeae - Any Metholdology Positive for Neisseria gonorrhoeae
Ova and Parasite

 Positive for Entamoeba Histolytica, Modified acid fast (Cryptosporidium, Cyclospora, Isospora)

Trichomonas, Any Methodology

Positive for Trichomonas

Vancomycin Resistant Enterococcus


 Effective: 02/12/2018