```xml
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns4:query_definition xmlns:ns2="http://www.i2b2.org/xsd/cell/crc/psm/1.1/" xmlns:ns4="http://www.i2b2.org/xsd/cell/crc/psm/querydefinition/1.1/" xmlns:ns3="http://www.i2b2.org/xsd/cell/crc/psm/analysisdefinition/1.1/">
    <query_name>CARDIOLIPIN IGG AB (LOINC:3181-5)@11:40:14</query_name>
    <query_timing>ANY</query_timing>
    <specificity_scale>0</specificity_scale>
    <panel>
        <panel_number>1</panel_number>
        <panel_timing>ANY</panel_timing>
        <panel_accuracy_scale>100</panel_accuracy_scale>
        <invert>0</invert>
        <total_item_occurrences>1</total_item_occurrences>
        <item>
            <hlevel>5</hlevel>
            <item_name>CARDIOLIPIN IGG AB (LOINC:3181-5)</item_name>
            <item_key>\\i2b2_LABS\i2b2\Labtests\LAB\(LLB6) Coagulation\(LLB7) Antiphospholipid Antibodies\ACLIgG\LOINC:3181-5\</item_key>
            <item_icon>LA</item_icon>
            <tooltip>Labtests \ Coagulation \ Antiphospholipid Antibodies \ Anticardiolipin IgG (Group:ACLIgG) \ CARDIOLIPIN IGG AB (LOINC:3181-5)</tooltip>
            <class>ENC</class>
            <constrain_by_value>
                <value_operator>LT</value_operator>
                <value_constraint>1000</value_constraint>
                <value_unit_of_measure>gplu</value_unit_of_measure>
                <value_type>NUMBER</value_type>
            </constrain_by_value>
            <item_is_synonym>false</item_is_synonym>
        </item>
    </panel>
</ns4:query_definition>

```

I want to find all patients who have had a CARDIOLIPIN IGG AB (LOINC:3181-5) test result with a value less than or equal to 100 gplu at any time during their medical history. This query will search for the specific lab test result within the Coagulation panel, under the Antiphospholipid Antibodies group, specifically the Anticardiolipin IgG (Group: ACLIg) subcategory. The query has a specificity scale of 0, meaning it will return all matching results, and a panel accuracy scale of 100, indicating that the result must be accurate. The query is not a synonym for another item and is set to return only one occurrence of the test result.