{"id":1185,"date":"2026-03-30T23:27:37","date_gmt":"2026-03-30T23:27:37","guid":{"rendered":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/?page_id=1185"},"modified":"2026-03-30T23:35:48","modified_gmt":"2026-03-30T23:35:48","slug":"critical-values","status":"publish","type":"page","link":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/critical-values\/","title":{"rendered":"Critical Values"},"content":{"rendered":"\t\t
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Critical Values<\/h1>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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List of critical values\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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List of critical values\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ANALYTE<\/strong><\/p><\/td>

AGE RANGE<\/p><\/td>

CRITICAL VALUE<\/p><\/td>

UNITS<\/strong><\/p><\/td><\/tr><\/thead>

Anion Gap<\/p><\/td>

Any age<\/p><\/td>

>30<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

Bicarbonate (Whole Blood)<\/p><\/td>

Any age<\/p><\/td>

<10
>40<\/p><\/td>

mEq\/L<\/p><\/td><\/tr>

Calcium *<\/p><\/td>

Any age<\/p><\/td>

<6.5
>13<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Chloride<\/p><\/td>

Any age<\/p><\/td>

<80
>120<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

CO2<\/p><\/td>

Any age<\/p><\/td>

<10
>40<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

CO Hemoglobin<\/p><\/td>

Any age<\/p><\/td>

>20<\/p><\/td>

%<\/p><\/td><\/tr>

Free (ionized) Calcium *<\/p><\/td>

Any age<\/p><\/td>

<0.8
>1.6<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

Creatinine<\/p><\/td>

1-28 days<\/p>

5weeks-23mo<\/p>

2y-11y<\/p>

12y-15y<\/p>

Adults<\/p><\/td>

\u22651.5<\/p>

\u22652<\/p>

\u22652.5<\/p>

\u22653<\/p>

\u226510<\/p><\/td>

mg\/dl<\/p><\/td><\/tr>

Digoxin<\/p><\/td>

Any age<\/p><\/td>

\u22654<\/p><\/td>

ng\/ml<\/p><\/td><\/tr>

Glucose<\/p><\/td>

0-2 days
>2 days &<1 year
>1 year<\/p><\/td>

<35
<40
<55<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Glucose<\/p><\/td>

<30 days
>30 days &<17 yrs
>17 yrs<\/p><\/td>

>200
>300
>450<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Glucose (GDM)
GDM Glucose Tolerance
GMD Glucose Tolerance 1hr
GMD Glucose Tolerance 2hrs
GMD Glucose Tolerance 3hrs<\/p><\/td>

Any age<\/p><\/td>

<50
>300<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Glucose<\/p>

PXP Glucose meter (POCT)<\/p><\/td>

Any age<\/p><\/td>

<40
>300<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Iron, Serum<\/p><\/td>

Any age<\/p><\/td>

\u2265350<\/p><\/td>

ug\/dL<\/p><\/td><\/tr>

Magnesium<\/p><\/td>

Any age<\/p><\/td>

<1.0
>3.5<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

pCO2<\/p><\/td>

Any age<\/p><\/td>

>65<\/p><\/td>

mmHg<\/p><\/td><\/tr>

pH<\/p><\/td>

Any age<\/p><\/td>

<7.20
>7.60\u00a0<\/p><\/td>

pH units<\/p><\/td><\/tr>

pH – Arterial & Venous Blood Gases, Cord Blood<\/p><\/td>

Any age<\/p><\/td>

<= 7.00<\/p><\/td>

N\/A<\/p><\/td><\/tr>

Base Excess – Arterial & Venous
Blood Gases, cord blood<\/p><\/td>

Any age<\/p><\/td>

<= -10.0
= >10.0<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

Phosphorus<\/p><\/td>

<3 years of age
3-12 years of age
>12 years of age<\/p><\/td>

\u22642.5
\u22642.0
\u22641.5<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

pO2 (arterial)<\/p><\/td>

Any age<\/p><\/td>

<50<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Potassium<\/p><\/td>

Less than 1 week
Older than 1 week
Any age<\/p><\/td>

<2.5
<3.0
>6.0<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

Potassium;
ISTAT (POCT)<\/p><\/td>

Any age<\/p><\/td>

<3.0
>6.0<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

Sodium<\/p><\/td>

Any age
Any age<\/p><\/td>

<125
>160<\/p><\/td>

mmol\/L<\/p><\/td><\/tr>

TCO\u2082\u00a0(Whole Blood)<\/p><\/td>

Any age<\/p><\/td>

<10
>40<\/p><\/td>

mEq\/L<\/p><\/td><\/tr>

Total Bilirubin<\/p><\/td>

<1 day
>1 day <2 days
>2 days <30 days<\/p><\/td>

\u22657
\u226511
\u226515\u00a0<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>

Troponin I<\/p><\/td>

Any age<\/p><\/td>

\u22650.3\u00a0<\/p><\/td>

ng\/mL<\/p><\/td><\/tr>

Troponin I:
ISTAT\u00a0(POCT)<\/strong><\/p><\/td>

Any age<\/p><\/td>

\u22650.1<\/p><\/td>

ng\/mL<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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* Calcium: mmol\/L (SI unit) = 0.25 (conversion factor) x mg\/dL (conventional unit)\n\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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HEMATOLOGY\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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Critical value<\/p><\/td><\/tr>

Hb<\/strong><\/p><\/td>

Critical value: \u2264 6.0 g\/dl, \u2265 20 g\/dl<\/p>

\u00a0<\/p><\/td><\/tr>

Hct<\/strong><\/p><\/td>

Critical value: \u2264 18%, > 60%<\/p>



<\/p>

\u00a0<\/p><\/td><\/tr>

WBC<\/strong><\/p><\/td>

Critical value: \u2264 2.0, \u2265 49.9X103\u00a0<\/sup>\/ul<\/strong><\/p>



<\/p>

\u00a0<\/p><\/td><\/tr>

Platelets<\/strong><\/p><\/td>

Critical value: \u2264 20,000,\u2265 999,000\/ ul<\/p>



<\/p>

\u00a0<\/p><\/td><\/tr>

Absolute neutrophil count<\/strong><\/p><\/td>

Critical value: <500\/ cm3\u00a0<\/strong><\/sup>or ,\u2265 999,000\/ ul<\/p>



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\u00a0<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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COAGULATION3-\n\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ANALYTE<\/strong><\/p><\/td>

AGE RANGE<\/p><\/td>

CRITICAL VALUE<\/p><\/td>

UNITS<\/strong><\/p><\/td><\/tr><\/thead>

Fibrinogen<\/strong><\/p><\/td>

Any age<\/p><\/td>

<100<\/p><\/td>

mg\/dL<\/p><\/td><\/tr>



<\/p>

Heparin, unfractionated<\/p><\/td>



<\/p>

Any age<\/p><\/td>



<\/p>

<0.1
>0.7<\/p><\/td>



<\/p>

IU\/mL
IU\/mL<\/p><\/td><\/tr>



<\/p>

PTT<\/strong><\/p>



<\/p>

\u00a0<\/p><\/td>



<\/p>

Any age<\/p><\/td>

\u00a0<\/p>

\u2265100<\/p><\/td>



<\/p>

sec<\/p><\/td><\/tr>

PT INR<\/p><\/td>

Any age<\/p><\/td>



<\/p>

>5.0 INR<\/p>

\u00a0<\/p><\/td>

N\/A<\/p><\/td><\/tr>

PT INR;
ISTAT (POCT)<\/p><\/td>

Any age<\/p><\/td>

>4.5<\/p><\/td>

N\/A<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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4-MICROBIOLOGY\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ANALYTE<\/strong><\/p><\/td>

AGE RANGE<\/p><\/td>

CRITICAL VALUE<\/p><\/td>

UNITS<\/strong><\/p><\/td><\/tr><\/thead>

Any assay: Potential Bioterrorism Agent<\/p><\/td>

Any age<\/p><\/td>

Presence of potential B. anthracis or any BT agent.<\/p>

Bacillus anthracis
(Category A)<\/p>

Francisella tularensis
(Category A)<\/p>

Yersinia pestis
(Category A)<\/p>

Brucella species
(Category B)\u00a0<\/p><\/td>

N\/A<\/p><\/td><\/tr>



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Blood Culture<\/p><\/td>



<\/p>

Any age<\/p><\/td>



<\/p>

Any clinically important positive result per protocol<\/p><\/td>



<\/p>

N\/A<\/p><\/td><\/tr>



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<\/p>

Mycobacterium Tuberculosis: Ziehl neelsen stain, Culture or PCR Test<\/p><\/td>



<\/p>

Any age<\/p><\/td>

\u00a0<\/p>

Positive<\/p><\/td>



<\/p>

N\/A<\/p><\/td><\/tr>

Stool culture<\/p><\/td>

<18 years<\/p><\/td>



<\/p>

Positive Shiga toxin producing E. Coli<\/p>

\u00a0<\/p><\/td>

N\/A<\/p><\/td><\/tr>

CSF culture<\/p><\/td>

Any age<\/p><\/td>

Organism seen in CSF direct film or culture<\/p><\/td>

N\/A<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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5- VIROLOGY\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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ANALYTE<\/strong><\/p><\/td>

AGE RANGE<\/p><\/td>

CRITICAL VALUE<\/p><\/td>

UNITS<\/strong><\/p><\/td><\/tr><\/thead>

Antigen test, culture, serology, or molecular test<\/p><\/td>

Any age<\/p><\/td>

Positive or suspicious for any Pandemic (Influenza or SARS) or Bioterrorism Agents (Smallpox, Viral hemorrhagic fever agents<\/p><\/td>

N\/A<\/p><\/td><\/tr>

Any CSF Assay<\/p><\/td>

Any age<\/p><\/td>

Positive (including virus growth or molecular test)<\/p><\/td>

N\/A<\/p><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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References<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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J Aldrige 05\/2008 mod 09\/2009\n\n<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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stanfordhealthcare.org\/health-care-professionals\/laboratory-critical-value-list.html<\/a><\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

List of critical values List of critical values 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 % Free (ionized) Calcium * Any age […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-1185","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/pages\/1185","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/comments?post=1185"}],"version-history":[{"count":4,"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/pages\/1185\/revisions"}],"predecessor-version":[{"id":1189,"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/pages\/1185\/revisions\/1189"}],"wp:attachment":[{"href":"https:\/\/techtonicwebdesign.com\/works\/ansarylabs\/wp-json\/wp\/v2\/media?parent=1185"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}