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Chemistry / Toxicology

Submission Fee

A $10 submission is assessed on each case.

Testing Schedule

Our goal is to provide accurate results and timely service. However, many diagnostic assays are not performed daily and/or testing schedules may change. If your case involves testing animals for export, testing show animals, testing animals to be sold, and/or testing a large number of samples, please contact the VDL (515-294-1950) prior to submission to verify the availability and turnaround time of specific assays. A phone call will often shorten turnaround time by allowing us time to prepare for testing prior to receipt of samples.

For further submission details see the ISU VDL User Guide

List of Specific Toxicology Tests Conducted.

The general specimen guidelines discussed below are usually suitable for detection of most toxicants; however, special considerations for individual chemical analyses are sometimes required.

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updated 9/17/09

 4 - Aminopyridine (Avitrol)
FEE:  $38.50

SPECIMEN: 
• stomach contents
• liver
• bait

 
DAYS TESTED: as needed    
TURN-AROUND: 1-2 days    
COMMENTS:

 

 Ammonia (Ammonia-Nitrogen)
FEE:  $27.50 SPECIMEN: 
• whole blood or serum 5 ml
• rumen contents 100g
• urine 5 ml
• aqueous humor 4ml
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:  Frozen (1-2 drops of saturated HgCl2

 

 Antibiotics
FEE:  contact the lab for details SPECIMEN: 
• liver 100g
• whole kidney
• stomach or rumen contents 100g
• feed 100g
• urine 50 ml
• milk 200 ml
• muscle 100g
SUBMISSION GUIDELINES:
• feed - see more info
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:  Individual tests for penicillin, lincomycin, chloramphenicol, tetracyclines, neomycin and tylosin

 

 Anticoagulant rodenticides - individual toxicants

FEE:  $38.50

SPECIMEN:
• whole blood
• feed
• liver
• bait and/or other materials
AMOUNT:
5 ml
100g
100g
100g
DAYS TESTED:    
TURN-AROUND:    
COMMENTS: 

 

 Anticoagulant rodenticides - panel

FEE:  $71.50

SPECIMEN:
• whole blood
• feed
• liver
• bait and/or other materials
AMOUNT:
5 ml
100g
100g
100g
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:  includes Warfarin, Bromodiolone, Chlorophacinone, Diphacinone, Brodifacoum

 

 Arsenical acid
FEE:  $82.50 SPECIMEN: 
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:

 

 Arsenic - fluids
FEE:  $22.00 SPECIMEN: 
• urine 5ml
 
DAYS TESTED: as needed    
TURN-AROUND: 1-2 days    
COMMENTS:

 

 Arsenic - feed or tissue
FEE:  $24.00 SPECIMEN: 
• liver 10g
• kidney 10g
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:

 

 Bone Ash
FEE:  $16.50 SPECIMEN: 
• bone 100g
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:

 

 Cadmium
FEE:  $24.50 SPECIMEN: 
• feed
• tissue
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:

 

 Caffeine
FEE:  $38.50 SPECIMEN: 
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:  see alkaloids

 

 Calcium
FEE:  $16.50 SPECIMEN: 
• serum 2ml
• feed 100g
• eyeball
• urine
• bone
SUBMISSION GUIDELINES:
• feed - see more info
DAYS TESTED:     
TURN-AROUND:    
COMMENTS:  serum must not be hemolyzed - separate from clot before transit

 

 Canine CNS panel
FEE:  $66.00 SPECIMEN: 
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:  includes Nicotine, 4-aminopyridine, Caffeine, Strychnine

 

 Carbadox
FEE:  contact the lab for details SPECIMEN: 
 
DAYS TESTED:    
TURN-AROUND:    
COMMENTS:

 

 Carbamate insecticides - qualitative
FEE:  $49.50 SPECIMEN: 
• tissue
• feed

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS: 

 

 Carbamate insecticides - quantitation of positive results
FEE:  $38.50 SPECIMEN: 
• tissue
• feed

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Carbamate insecticides - panel
FEE:  $66.00 SPECIMEN: 
• tissue
• feed

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Carbon monoxide - carboxyhemoglobin
FEE:  $33.00 SPECIMEN: 
• whole blood
• fetal thoracic fluid 10g
 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Chlorinated hydrocarbons - qualitative
FEE:  $49.50 SPECIMEN: 
• brain (cerebrum) half of brain
• stomach contents 100g
• rumen contents 100g
• liver 50g
• body fat 10g
• kidney 50g
• blood 10g
• feed 100g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Must not be contaminated with hair or stomach contests.  Place in chemically clean glass jars (line lids with foil).  Avoid plastic containers, Wrap specimen in clean aluminum foil.

 

 Chlorinated hydrocarbons - quantitation of positive results
FEE:  $38.50 SPECIMEN: 
• brain (cerebrum) half of brain
• stomach contents 100g
• rumen contents 100g
• liver 50g
• body fat 10g
• kidney 50g
• blood 10g
• feed 100g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Chlorinated hydrocarbons - panel
FEE:  $66.00 SPECIMEN:
• brain (cerebrum) half of brain
• stomach contents 100g
• rumen contents 100g
• liver 50g
• body fat 10g
• kidney 50g
• blood 10g
• feed 100g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Cholecalciferol
FEE:  $65.00 SPECIMEN: 
• bait 100g
• kidney (fresh and fixed) 50g
• serum 10ml
 
 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Cholinesterase (AChE)
FEE:  $22.00

SPECIMEN: 
• whole blood 5ml
• brain (refrigerated or frozen) half of cerebrum

 
DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS:

 

 Copper - serum

FEE:  $16.50 ea.  1-10 samples
        $12.50 ea. >10 samples

 

SPECIMEN: 
• serum 2ml
 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Copper - feed, tissue, blood
FEE:  $24.00 SPECIMEN: 
• liver and kidney 50g
• feed 100g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  2-4 days    
COMMENTS:

 

 Coumesterol
FEE:  $77.00 SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Cyanide
FEE:  $33.00 SPECIMEN: 
• whole blood 10ml
• liver 50g
• forage
• silage 50g
• skeletal muscle 100g
• other materials 100g

SUBMISSION GUIDELINES:
forage - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Freeze specimens promptly in airtight container.

 

 Drugs - amphetamine, barbiturates, caffeine, nicotine, etc

FEE:  contact the lab for details

 

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Ergot alkaloids - qualitative
FEE:  $33.00 SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Ergopeptine alkaloid panel
FEE:  $71.50 SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Ergovaline
FEE:  $49.50 SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Ethylene glycol
FEE:  $44.00

SPECIMEN: 
• serum 10ml
• stomach contents 100g
• bait 100g
• kidney (fixed)
• urine 10ml

 
DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS:

 

 Feed particle size
FEE:  $16.50

SPECIMEN: 
• feed 200g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Not for high-fat feeds.

 

 Fluoride
FEE:  $38.50

SPECIMEN: 
• serum
• urine
• bone
• tissue

SUBMISSION GUIDELINES:

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Representative of whole skeleton.

 

 Fungicides
FEE:  contact the lab for details

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Gossypol
FEE:  $33.00 qualitative
        $38.50 quantitation of 
                    positive results

SPECIMEN: 
• feed 100g
 

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Herbicides
FEE:  contact the lab for details

SPECIMEN: 
• plants 100g
• urine 50ml
• rumen contents 200g
• liver or kidney 50g
• water 100ml
• soil 100g

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  See also carbamate, chlorinated hydrocarbon and organophosphorus insecticides.

 

 Hormonally active feed compound panel
FEE:  $82.50

SPECIMEN: 
• feed

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS: includes Coumesterol, DES(Diethylstilbestrol), MGA (Melengestrol acetate), Zearalenone, Zearalenol

 

 Iron - serum
FEE:  $16.50

SPECIMEN: 
• serum 5ml

 
DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS:

 

 Iron - feed, tissue
FEE:  $24.50

SPECIMEN: 
• feed
• kidney or liver 50g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS:

 

 Lasalocid - qualitative
FEE:  $45.00 each

SPECIMEN: 
• stomach content 200g
• feed 200g
• heart (fixed) whole
• skeletal muscle (fixed)

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  1-2 days    
COMMENTS:

 

 Lead - blood
FEE:  $16.50

SPECIMEN: 
• whole blood 2ml

 
DAYS TESTED: as needed    
TURN-AROUND:  1-2 days     
COMMENTS:

 

 Lead - feed, tissues
FEE:  $24.50

SPECIMEN: 
• feed
• kidney or liver 50g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  1-2 days     
COMMENTS:

 

 Magnesium - serum
FEE:  $15.00

SPECIMEN: 
• serum
• water

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Magnesium - feed
FEE:  $24.50

SPECIMEN: 
• feed

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Manganese - serum
FEE:  $15.00

SPECIMEN: 
• serum
• water

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Manganese - feed
FEE:  $24.50

SPECIMEN: 
• feed

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Methemaglobin
FEE:  $27.50

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Mercury
FEE:  $33.00

SPECIMEN: 
• blood
• feed or tissue

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 MGA - Melengestrol acetate
FEE:  $77.00 quantitative

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Mineral panel by ICPMS - feed
FEE:  $55.00

SPECIMEN: 

 SEE MORE INFO:
 • new technology video
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  panel includes Ca, P, K, Mg, Na, Cd, Co, Cr, Cu, Fe, Mn, Mo, Se, Zn

 

 Mineral panel by ICPMS - serum and water
FEE:  $50.00

SPECIMEN: 

 SEE MORE INFO:
 • new technology video
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  panel includes Ca, P, K, Mg, Cu, Fe, Mn, Mo, Se, Zn

 

 Mineral panel by ICPMS - tissue
FEE:  $55.00

SPECIMEN: 

 SEE MORE INFO:
 • new technology video 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS: panel includes Ca, P, K, Mg, NA, Cd, Co, Cr, Cu, Fe, Mn, Mo, Se, Zn

 

 Moisture
FEE:  $7.00

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Molybdenum
FEE:  $33.00

SPECIMEN: 
• feed

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Monensin

FEE:  $38.50 each qualitative

        $33.00 each quantitation of 
                           positive results

SPECIMEN: 
• stomach content 200g
• feed 200g
• heart (fixed) whole
• skeletal muscle (fixed)

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Mycotoxin screen #1

FEE:  $40.00 qualitative       

SPECIMEN: 

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed  

SEE MORE INFO:
aflatoxin
mycotoxins

TURN-AROUND:     
COMMENTS: panel includes Aflatoxin and Fumonisin

 

 Mycotoxin screen #2

FEE:  $ 60.00 qualitative 

SPECIMEN: 

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed  

SEE MORE INFO:
aflatoxin
mycotoxins

TURN-AROUND:     
COMMENTS: panel includes Aflatoxin, Fumonisin and Vomitoxin (DON)

 

 Mycotoxin screen #3

FEE:  $ 70.00 qualitative 

SPECIMEN: 

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed  

SEE MORE INFO:
aflatoxin
mycotoxins 

TURN-AROUND:    
COMMENTS: panel includes Aflatoxin, Fumonisin, Vomitoxin (DON) and Zearalenone

 

 Mycotoxins

FEE:  $33.00 each  qualitative 

        $35.00 each quantitation of
                           positive results
       

SPECIMEN: 
• liver or kidney 100g
• stomach/rumen contents 200g
• feed 200g
• forage 200g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed  

SEE MORE INFO:
aflatoxin
mycotoxins

TURN-AROUND:     
COMMENTS: testing available for Aflatoxin, Fumonisin, Ochratoxin, T-2, Vomitoxin, or Zearalenone/Zearalenol

 

 Mycotoxins - panel
FEE:  $75.00 qualitative

SPECIMEN: 
• feed 2lbs

SUBMISSION GUIDELINES:
feed

DAYS TESTED: as needed  

SEE MORE INFO:
aflatoxin
mycotoxins

TURN-AROUND:     
COMMENTS:  panel includes Aflatoxin, Ochratoxin, T-2, Vomitoxin, or Zearalenone/Zearalenol

 

 Mycotoxin Tremorgens panel
FEE:  $82.50

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  panel includes aflatrems, ergot alkaloids, fumitremorgens, penitrems

 

 Nicotine
FEE:  $38.50

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Nitrate or Nitrite - fluids
FEE:  $16.50  

SPECIMEN: 
• water 50 ml
• eyeball or aqueous humor

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Keep refrigerated

 

 Nitrate or Nitrite - feed or tissue
FEE:  $27.50

SPECIMEN: 
• forage or silage 100g
• rumen contents 250g
• other materials 100g

SUBMISSION GUIDELINES:
forage - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Keep refrigerated

 

 Organophosphates - qualitative
FEE:  $49.50 each

SPECIMEN: 
• feed 100g
• brain -half
• stomach contents 50g
• rumen contents 50g
• whole blood 5ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Stomach and rumen should be composite samples.  See also cholinesterase.

 

 Organophosphates - quantitation of positive results
FEE:  $38.50 each

SPECIMEN: 
• feed 100g
• brain -half
• stomach contents 50g
• rumen contents 50g
• whole blood 5ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Stomach and rumen should be composite samples.  See also cholinesterase.

 

 Organophosphates - panel
FEE:  $66.00

SPECIMEN: 
• feed 100g
• brain -half
• stomach contents 50g
• rumen contents 50g
• whole blood 5ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  Stomach and rumen should be composite samples.  See also cholinesterase.

 

 Oxalate
FEE:  $44.00

SPECIMEN: 
• fresh forage 6-8 plants
• kidney (fresh and fixed) - whole

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  One kidney for large animals, both in small animals.

 

 PCB - polychlorinated biphenyls
FEE:  contact laboratory

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 pH
FEE:  $5.50

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Pyrethroid insecticides
FEE:  contact laboratory

SPECIMEN: 
• brain 100g
• insecticide material 100

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Selenium - blood or serum

FEE:  $20.00 ea. 1 - 9 samples
        $15.00 ea.  >10 samples

SPECIMEN: 
• serum 2ml

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Selenium - liver or feed

FEE:  $25.00

SPECIMEN: 
• feed 50g
• whole blood 10ml
• liver 50g
• hair or hoof (chronic) 50g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Sodium - fluids
FEE:  $15.00

SPECIMEN: 
• serum 2ml

SUBMISSION GUIDELINES:
 

DAYS TESTED: as needed    
TURN-AROUND:  2-4 days    
COMMENTS:

 

 Sodium - feed and tissue
FEE:  $22.00

SPECIMEN: 
• feed
• brain 100g
• brain (half) fixed
• CSF 3ml
• eyeball
• feed 250 g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:  2-4 days    
COMMENTS:

 Slaframine
FEE:  $82.50

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Strychnine
FEE:  $33.00

SPECIMEN: 

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  see alkaloids

 

 Sulfate - water
FEE:  $16.50

SPECIMEN: 
• water 100ml

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Sulfate - feed
FEE:  $22.00

SPECIMEN: 
• feed 100g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Sulfonamides - qualitative
FEE:  $38.50 each

SPECIMEN: 
• feed 250g
• urine 10ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Sulfonamides - quantitation of positive results
FEE:  $49.50 each

SPECIMEN: 
• feed 250g
• urine 10ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Sulfonamides - panel
FEE:  $66.00

SPECIMEN: 
• feed 250g
• urine 10ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  panel includes Sulfamerazine, Sulfamethazine, Sulfapyridine, Sulfaquinoxaline, Sulfathiazole

 

 Total dissolved solids (TDS)
FEE:  $8

SPECIMEN: 
• water

 
DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Urea
FEE:  $33.00

SPECIMEN: 
• feed 100g
• other materials 500g

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  all specimens should be frozen - See ammonia

 

 Vitamins A, E or D3 - feed
FEE:  $65.00 each

SPECIMEN: 
• feeds

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:

 

 Vitamins A or E - liver
FEE:  $30.00 each 1-10 samples
        $20.00 each >10 samples

SPECIMEN: 
• liver 100

 
DAYS TESTED: as needed    
TURN-AROUND:  2-7 days     
COMMENTS:

 

 Vitamins A or E - serum
FEE:  $20.00 each 1-10 samples
        $12.50 each >10 samples

SPECIMEN: 
• serum

 
DAYS TESTED: as needed    
TURN-AROUND:  2-4 days     
COMMENTS:

 

 Water quality panel
FEE:  $38.50

SPECIMEN: 
• water

 
DAYS TESTED: as needed    
TURN-AROUND:  2-4 days    
COMMENTS:  panel includes Nitrate/Nitrite, Total Dissolved Solids, Sulfates, Coliform bacteria)

 

 Zinc

FEE:  $16.50 serum, urine
        $24.50 feed, tissue

SPECIMEN: 
• serum 2ml
• feed 
• liver or kidney 100g
• urine 5ml

SUBMISSION GUIDELINES:
feed - see more info

DAYS TESTED: as needed    
TURN-AROUND:     
COMMENTS:  For best results use special trace element collection tubes (royal blue stopper).  Others may be contaminated.

 

*** additional testing and charges may be required