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Test Code LACTS Lactose Tolerance Test, Plasma or Serum

Important Note

This is a scheduled test. Please call Bronson Central Scheduling at 269-341-8700 to schedule this testing for Kalamazoo campus or Battle Creek Lab at 269-704-4142 to scehdule ths testing at Bronson Battle Creek lab.

There is a preparation step that must be completed by the lab prior to the patient arriving.  

This testing is only available Tuesday through Saturday, but must be scheduled at least 24 hours before patient is to arrive.

 

Please call Bronson Laboratory Services to schedule testing.

Battle Creek (269) 704-4142

Kalamazoo (269) 341-8700

Additional Codes

Epic Test ID

LAB2208

Performing Laboratory

Bronson Laboratory Services-Chemistry

Reference Values

BMH BBC

A flat glucose curve with glucose levels increasing <20
mg/dL over fasting levels and symptoms including gas, cramps, and
diarrhea is evidence of lactase deficiency.

A peak rise of less than 20 mg/dl of glucose is usually
consistent with lactose intolerance

 

Methodology

Spectrophotometric

Specimen Requirements

Please call Bronson Laboratory Services to schedule testing.

Battle Creek (269) 704-4142

Kalamazoo (269) 341-8700

 

Submit only 1 of the following specimens:

 

Preferred

Specimen Type: Plasma
Container/Tube: PST mint top gel, green top (heparin) or grey-top (potassium oxalate/sodium fluoride).  Spin down to separate plasma from cells as soon as possible.  NOTE: Grey top tube has a preservative, and prompt centrifugation is not required. 

Specimen Volume: 3 mL

Collection Instructions:

1. Patient should have nothing to eat or drink for at least 8
hours before test (except for sips of water). Patient remains
fasting including no smoking, chewing gum, or Lifesavers.

2. Draw blood for the following specimens: fasting, 30-,
60-, 90-, and 120-minute glucose measurements.

3. Report occurrence of any vomiting to the laboratory. Patient
is encouraged to drink a moderate amount (1 to 2 glasses) of water
during test. Patient should remain seated or in bed during
test.

4. Label specimens with corresponding draw time and
interval.

 

Alternate

Specimen Type: Serum
Container/Tube: SST gold top gel or plain red top are acceptable, but not preferred because the sample must first be allowed to clot before centrifugation.  Extended contact between cells and serum can falsely lower glucose values. 


Specimen Volume: 3 mL

Collection Instructions:

1. Patient should have nothing to eat or drink for at least 8
hours before test (except for sips of water). Patient remains
fasting including no smoking, chewing gum, or Lifesavers.

2. Draw blood for the following specimens: fasting,
30-, 60-, 90-, and 120-minute glucose measurements.

3. Report occurrence of any vomiting to the laboratory. Patient
is encouraged to drink a moderate amount (1 to 2 glasses) of water
during test. Patient should remain seated or in bed during
test.

4. Label specimens with corresponding draw time and
interval.

Specimen Transport Temperature

Refrigerate

Day(s) Test Set Up

By appointment only

Test Classification and CPT Coding

82951