Macroamylase Determination
2004464
 
Ordering Recommendation
Mnemonic
MACROAMY
Methodology
Quantitative Ultrafiltration/Quantitative Enzymatic
Performed
Thu
Reported
2-9 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Plasma separator tube, serum separator tube, or plain red.  
Specimen Preparation
Allow specimen to clot completely at room temperature. Separate serum or plasma from cells ASAP or within 2 hours of collection. Transfer 2 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 1.1 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
Specimens containing calcium chelating anticoagulants such as citrates, EDTA, or oxalates.  
Remarks
 
Stability
After separation from cells: Ambient: 1 week; Refrigerated: 1 month; Frozen: 1 month  
Reference Interval
Test Number Components Reference Interval
Amylase, Total
3-​90 days 0-​30 U/L
3-​6 months 7-​40 U/L
7-​8 months 7-​57 U/L
9-​11 months 11-​70 U/L
12-​17 months 11-​79 U/L
18-​35 months 19-​92 U/L
3-​4 years 26-​106 U/L
5-​12 years 30-​119 U/L
13 years and older 30-​110 U/L
Amylase, Monomeric
18 years and older 23-​110 U/L
Amylase, Percent Monomeric Greater than or equal to 71 percent
Interpretive Data
An amylase, monomeric result above the upper reference limit is consistent with hyperamylasemia. An amylase, percent monomeric less than 71 percent suggests the presence of macroamylase.

Amylase, monomeric is determined after ultrafiltration. Macroamylase is removed by ultrafiltration and is not measured.

For confirmation of macroamylasemia, consider ordering Amylase, Urine (ARUP test code 0020471).

See Compliance Statement B: www.aruplab.com/CS
Note
CPT Code(s)
82150; 84999
Components
Component Test Code*Component Chart Name
2004465Amylase, Total
2004466Amylase, Monomeric
2004467Amylase, Percent Monomeric
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • Monomeric Amylase
  • monomeric and total amylase
  • serum macroamylase