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Epic Code LAB3389 Unfractionated Heparin Level

Important Note

There is currently a nationwide shortage of this tube. Please take steps to ensure specimen integrity to reduce recollection. Specimen Tube Shortage (link)

Test Name Alias

Unfractionated Heparin Blood Lvl | UFH | UF Heparin Blood Level | Unfractionated Heparin Blood Lvl | Heparin anti-xa assay | 8101

Interface Order Alias

11683

Clinical Information

Plasma unfractionated heparin (UFH) anti-Xa assay using unfractionated heparin standard curve. Assay is valid only for unfractionated heparin. The UFH anti-Xa assay should be ordered in patients when a measurement of heparin levels would be more accurate than the estimate provided by the APTT. For example, this may occur in patients with lupus anticoagulants producing an elevated baseline APTT.

 

In addition on October 26, 2021, the UFH level will be the test utilized to monitor heparin therapy in the pediatric patient population at HDVCH.

Icons & Photos

Collection Instructions

Specimen Collection: Blood

 

Container(s): 3.2% Na Citrate Tube (blue top)

Preferred Volume to Collect: 2.7 mL (full 2.7 mL blue tube)

Minimum Volume to Collect: 1.8 mL (full 1.8 mL blue white tube)

Capillary collect ok: No

Microtainer acceptable: No

 

Collection Instructions:

Processing Instructions (Laboratory, Outpatient or Off-site collection)

Processed Specimen: Platelet Poor Plasma

 

Centrifuge/Spin: Yes

Aliquot: Yes

 

Processing Instructions:

  • Detailed instructions (link): Preparing Platelet Poor Plasma
  • Separate plasma into 2 - 3 aliquots, minimum of 0.5 mL each.
  • Freeze aliquots in plastic transport tubes immediately.

Transport Temperature:

  • Ambient (up to 1 hour in whole blood state)
  • Frozen (plasma only >1 hours)

Rejection Criteria

  • Hemolysis
  • Specimen has been thawed

Specimen Stability

Ambient: 1 Hour

Refrigerate: Not acceptable

Frozen: Aliquot and freeze platelet poor plasma within 1 hour of collection

Laboratory Retention: 24 hours

Test Frequency

Available daily, usual turn-around time 4 hours

Reference Range

The generally accepted therapeutic range for unfractionated heparin is 0.3 - 0.7 U/mL. This therapeutic range is used for establishing the APTT interpretive nomograms for monitoring of heparin therapy with this test.

Performing Department

COAGULATION

Performing Department Laboratory Location

Spectrum Health Regional Laboratory, Grand Rapids, MI

 

Regional Hospital Labs:
Spectrum Health Big Rapids Laboratory, Big Rapids, MI
Spectrum Health Blodgett Laboratory, Grand Rapids, MI
Spectrum Health Gerber Laboratory, Fremont, MI
Spectrum Health Kelsey Laboratory, Lakeview, MI
Spectrum Health Ludington Laboratory, Ludington, MI
Spectrum Health Pennock Laboratory, Hastings, MI
Spectrum Health Reed City Laboratory, Reed City, MI
Spectrum Health United Laboratory, Greenville, MI
Spectrum Health Zeeland Laboratory, Zeeland, MI

Methodology

Chromogenic Based Assay

CPT

85220

CDM Code

4098612

Epic Test ID

1230101251

Beaker LOINC

UNFRACTIONATED HEPARIN LEVEL: 3274-8

Reviewed Date

10/11/2021

Beaker Names

Beaker Procedure Name: UNFRACTIONATED HEPARIN BLOOD LEVEL
Beaker Display Name: Unfractionated Heparin Level
BEAKER TEST NAME: UNFRACTIONATED HEPARIN
BEAKER TEST REPORT NAME: Unfractionated Heparin

Beaker Synonyms

No synonym on file

Beaker Collection and Specimen Handling

BEAKER COLLECTION: LOOK+LOOK

Beaker Location, Container and Temperature

BW COAGULATION: BLUE TOP TUBE (Preferred)
BL COAGULATION: BLUE TOP TUBE (Preferred)
BR COAGULATION: BLUE TOP TUBE (Preferred)
GM COAGULATION: BLUE TOP TUBE (Preferred)
KL COAGULATION: BLUE TOP TUBE (Preferred)
LH COAGULATION: BLUE TOP TUBE (Preferred)
PH COAGULATION: BLUE TOP TUBE (Preferred)
RC COAGULATION: BLUE TOP TUBE (Preferred)
UN COAGULATION: BLUE TOP TUBE (Preferred)
ZH COAGULATION: BLUE TOP TUBE (Preferred)