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Test Code LAB3317 Mitogen Stimulation Study

Important Note

Note: limited specimen stability - see Sample Requirements below. 

Ordering Providers:  Please be sure to indicate stimulants requested (PHA and/or anti-CD3).

Off-site Collection:  If specimen will not arrive at Children's before noon for same day testing, blood should be drawn after noon, maintained at room temperature, and sent overnight to allow test set-up the following morning. Daily cut-off for processing by Cell Markers Laboratory is noon M-F. Testing is NOT performed on Saturdays, Sundays, or holidays.

WARNING: Specimen stability is 24 hours. See additional notes under 'Processing Instructions - Offsite Collection'.  If specimens are received outside of this window, they will be cancelled.

Clinical System Name

Mitogen Stimulation Study

Synonyms

Anti CD3 Stimulant
Lymphocyte Function Analysis
Mitogen Stimulation Study
PHA (Phytohemaglutinin) Stimulant
T cell proliferation to mitogens

Lymphocyte Mitogen Stimulation

MSS

Sample Requirements

Specimen:  Whole Blood

Container(s):  Dark Green/Sodium Heparin (no serum separator)

Preferred Vol:  10 mL

Minimum Vol:  10 mL (if unable to collect 10 mL, please contact lab at 206-987-2560)

 

Note: 

 Specimens stable for only 24 hours at room temperature.

 

  Collected in-house at Seattle Children's Collected off-site (including SCH Bellevue, SCH North and SCH South)
M-Th collect any time Collect after noon, unless sample reaches Cell Markers lab before noon for same day test set-up.
Friday must be received before 12 noon Friday must be received at SCH main lab before 12 noon Friday
Saturday do not collect do not collect
day before a holiday ok if collected before 12 noon must be received at SCH main lab before 12 noon day before holiday
Sunday ok if collected after 12 noon (to be tested next morning)

ok if collected after 12 noon (to be tested next morning)

Sunday before a holiday Monday do not collect do not collect
Holiday ok if collected after 12 noon (to be tested next morning, if Friday Holiday DO NOT COLLECT) ok if collected after 12 noon (to be tested next morning, if Friday Holiday DO NOT COLLECT)

 

Call the Cell Markers Lab (206) 987-2560 with any questions regarding specimen collection or handling. If unable to collect minimum volume, please collect as close to 10 mL as possible (10 mL each for Mitogen and Antigen) and notify Cell Markers at 206-987-2560 (leave voicemail after hours).

Draw an additional 10 mL NaHep if an antigen stimulation studies (candida, tetanus) are also ordered.    

        

 

Processing Instructions

Reject due to:  n/a - send to lab

Spin:  N

Aliquot:  N

Temp:  RT

Storage location:  Days: Transport specimen, copy of community services requisition (if applicable), and labels to the Cell Markers lab (station #181).  Notify Cell Markers at x72560 right away if specimen is near 24 hour specimen stability limit - billing/ordering problems should not delay delivery to lab. Eves/Nights: Store specimen, copy of community services requisition (if applicable), and labels in the Cell Markers RT box in CPA.

 

Off-site collection: Dark Blue Na Heparin okay. A normal control should accompany the specimen. It is critical samples be kept at room temperature; use extra packing to maintain temperature. If specimen will not arrive at Children's before noon for same day testing, blood should be drawn as late in the day as possible, maintained at room temperature, and sent overnight to allow test set-up the following morning. Testing must be set up within 24 hours of collection. Transport all tubes at RT to Seattle Children's Hospital address on requisition: Laboratory FB.2.441, 4800 Sand Point Way NE, Seattle, WA  98105. 

Stability

Temperature Time
Room temp 24 hours
Refrigerated N
Frozen N

 

Availability

STAT Performed TAT
N

Monday - Thurs; Friday must be in lab before noon

7 - 10 days

Limited specimen stability - see sample requirements

Performing Laboratory

Seattle Children's Laboratory    

Department

Department:  Cell Markers

Phone Number: 206-987-2560

 

 

CPT Codes

 

  CPT CODE
Set up and Initial Mitogen or Antigen Stimulant

86353

Each additional Mitogen or Antigen Stimulant 86353

 

Methodology

Method:  Lymphocyte proliferation with 3H thymidine incorporation

Analytical Volume: dependent on patient lymphocyte count

Limitations:  None specified

Reference Range

Reference values accompany patient report.

Description

The Mitogen Stimulation Study is used in the evaluation of immunodeficiency to determine the functional capabilities of peripheral blood mononuclear cells to respond to non-specific stimuli (PHA and/or anti-CD3).