Skip Ribbon Commands
Skip to main content
Sign In

25003 Posaconazole, Serum (POSA)

Posaconazole, Serum (POSA)
Test Code: POSACSO
Synonyms/Keywords
Noxafil (Posaconazole), Posaconazole (Noxafil)
Useful For
Monitoring of posaconazole therapy
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
Serum​ ​Red Top Tube (RTT) 2 mL​ 0.6 mL​
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​ Refrigerated (preferred)​ 28 days
Ambient ​28 days
​Frozen ​28 days
Rejection Criteria
Serum gel tube​
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Clinic Laboratories​​
Monday through Friday
2 days​
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
Reference Range Information
Performing Location Reference Range
Mayo Clinic Laboratories​​
>700 ng/mL (trough)
Interpretation
Greater than 700 ng/mL (>0.7 mcg/mL) has been suggested for prophylaxis
Greater than or equal to 1250 ng/mL (1.25 mcg/mL) were shown to be optimal in a salvage trial for treatment of invasive Aspergillus infections
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​80187
Synonyms/Keywords
Noxafil (Posaconazole), Posaconazole (Noxafil)
Ordering Applications
Ordering Application Description
​Centricity ​Posaconazole, Serum (89591)
​Cerner ​None
If the ordering application you are looking for is not listed, contact your local laboratory for assistance.
Specimen Requirements
Specimen Type Preferred Container/Tube Acceptable Container/Tube Specimen Volume Specimen Minimum Volume
(allows for 1 repeat)
Pediatric Minimum Volume
(no repeat)
Serum​ ​Red Top Tube (RTT) 2 mL​ 0.6 mL​
Specimen Stability Information
Specimen Type Temperature Time
​Serum ​ ​ Refrigerated (preferred)​ 28 days
Ambient ​28 days
​Frozen ​28 days
Rejection Criteria
Serum gel tube​
Useful For
Monitoring of posaconazole therapy
Reference Range Information
Performing Location Reference Range
Mayo Clinic Laboratories​​
>700 ng/mL (trough)
Interpretation
Greater than 700 ng/mL (>0.7 mcg/mL) has been suggested for prophylaxis
Greater than or equal to 1250 ng/mL (1.25 mcg/mL) were shown to be optimal in a salvage trial for treatment of invasive Aspergillus infections
For more information visit:
Performing Laboratory Information
Performing Location Day(s) Test Performed Analytical Time Methodology/Instrumentation
Mayo Clinic Laboratories​​
Monday through Friday
2 days​
Liquid Chromatography-Tandem Mass Spectrometry (LC-MS/MS)
Reference Lab
For billing questions, see Contacts
Outreach CPTs
CPT Modifier
(if needed)
Quantity Description Comments
​80187
For most current information refer to the Marshfield Laboratory online reference manual.